# Bipolar Holocene Composite Ice Core CH4, d13C, and dD Data
#----------------------------------------------------------------------- 
#                World Data Service for Paleoclimatology, Boulder 
#                                  and 
#                     NOAA Paleoclimatology Program 
#             National Centers for Environmental Information (NCEI)
#----------------------------------------------------------------------- 
# Template Version 3.0
# Encoding: UTF-8
# NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. 
# If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. 
#
# Online_Resource: https://www.ncdc.noaa.gov/paleo/study/25350
#       Description: NOAA Landing Page
# Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/beck2018north-ch4.txt
#       Description: NOAA location of the template
#
# Original_Source_URL:  
#       Description:
# 
# Description/Documentation lines begin with #
# Data lines have no #
#
# Archive: Ice Core
#
# Dataset DOI: 
#
# Parameter_Keywords: atmospheric gas, carbon isotopes, hydrogen isotopes
#--------------------
# Contribution_Date
#	Date: 2018-12-07
#--------------------
# File_Last_Modified_Date
#	Date: 2018-12-07
#--------------------
# Title
#	Study_Name: Bipolar Holocene Composite Ice Core CH4, d13C, and dD Data
#--------------------
# Investigators
#	Investigators: Beck, J.; Bock, M.; Schmitt, J.; Seth, B.; Blunier, T.; Fischer, H.
#--------------------
# Description_Notes_and_Keywords
#	Description: Ice core Holocene composite Northern (GISP2, GRIP, NGRIP) and Southern (EDC, EDML, TALDICE, WAIS) Hemisphere methane (CH4), 
#	carbon isotope (d13C), and hydrogen isotope (dD) data. NH compillation of Greenland ice core CH4 concentration data over the Holocene; 
#	data are temporally synchronised, corrected for interlaboratory offsets and outlayers are removed (see Beck et al., 2018)
#	Provided Keywords: Holocene, methane, CH4 concentration, inter polar difference, ice core, NGRIP, GRIP, GISP2, Greenland
#--------------------
# Publication 
#	Authors: Jonas Beck, Michael Bock, Jochen Schmitt, Barbara Seth, Thomas Blunier, and Hubertus Fischer 
#	Published_Date_or_Year: 2018-11-30      
#	Published_Title: Bipolar carbon and hydrogen isotope constraints on the Holocene methane budget
#	Journal_Name: Biogeosciences 
#	Volume: 15
#	Edition: 
#	Issue: 
#	Pages: 7155-7175
#	Report_Number: 
#	DOI: 10.5194/bg-15-7155-2018
#	Online_Resource: https://www.biogeosciences.net/15/7155/2018/
#	Full_Citation: 
#	Abstract: Atmospheric methane concentration shows a well-known decrease over the first half of the Holocene following the Northern Hemisphere summer insolation before it started to increase again to preindustrial values. There is a debate about what caused this change in the methane concentration evolution, in particular, whether an early anthropogenic influence or natural emissions led to the reversal of the atmospheric CH4 concentration evolution. Here, we present new methane concentration and stable hydrogen and carbon isotope data measured on ice core samples from both Greenland and Antarctica over the Holocene. With the help of a two-box model and the full suite of CH4 parameters, the new data allow us to quantify the total methane emissions in the Northern Hemisphere and Southern Hemisphere separately as well as their stable isotopic signatures, while interpretation of isotopic records of only one hemisphere may lead to erroneous conclusions. For the first half of the Holocene our results indicate an asynchronous decrease in Northern Hemisphere and Southern Hemisphere CH4 emissions by more than 30 Tg CH4 yr-1 in total, accompanied by a drop in the northern carbon isotopic source signature of about -3 per mil. This cannot be explained by a change in the source mix alone but requires shifts in the isotopic signature of the sources themselves caused by changes in the precursor material for the methane production. In the second half of the Holocene, global CH4 emissions increased by about 30 Tg CH4 yr-1, while preindustrial isotopic emission signatures remained more or less constant. However, our results show that this early increase in methane emissions took place in the Southern Hemisphere, while Northern Hemisphere emissions started to increase only about 2000 years ago. Accordingly, natural emissions in the southern tropics appear to be the main cause of the CH4 increase starting 5000 years before present, not supporting an early anthropogenic influence on the global methane budget by East Asian land use changes.
#------------------
# Publication 
#	Authors: Logan Mitchell, Ed Brook, James E. Lee, Christo Buizert, Todd Sowers
#	Published_Date_or_Year: 2013-11-22     
#	Published_Title: Constraints on the Late Holocene Anthropogenic Contribution to the Atmospheric Methane Budget
#	Journal_Name: Science
#	Volume: 342
#	Edition: 
#	Issue: 6161
#	Pages: 964-966
#	Report_Number: 
#	DOI: 10.1126/science.1238920
#	Online_Resource: http://science.sciencemag.org/content/342/6161/964
#	Full_Citation: 
#	Abstract: The origin of the late preindustrial Holocene (LPIH) increase in atmospheric methane concentrations has been much debated. Hypotheses invoking changes in solely anthropogenic sources or solely natural sources have been proposed to explain the increase in concentrations. Here two high-resolution, high-precision ice core methane concentration records from Greenland and Antarctica are presented and are used to construct a high-resolution record of the methane inter-polar difference (IPD). The IPD record constrains the latitudinal distribution of emissions and shows that LPIH emissions increased primarily in the tropics, with secondary increases in the subtropical Northern Hemisphere. Anthropogenic and natural sources have different latitudinal characteristics, which are exploited to demonstrate that both anthropogenic and natural sources are needed to explain LPIH changes in methane concentration.
#------------------
# Publication 
#	Authors: Brook, E.J.
#	Published_Date_or_Year: 2009     
#	Published_Title: Methane measurements from the GISP2 and Siple Dome ice cores
#	Journal_Name: NSIDC
#	Volume: 
#	Edition: 
#	Issue: 
#	Pages:
#	Report_Number: 
#	DOI: 
#	Online_Resource: https://nsidc.org/data/nsidc-0440
#	Full_Citation: 
#	Abstract: This data set contains methane measurements made in trapped air in the Holocene sections of two ice cores: the Siple Dome ice core in Antarctica, and the Greenland Ice Sheet Project 2 (GISP2) ice core in Greenland. The measurements were made at Oregon State University between 2007 and 2009. Measurements were made relative to the NOAA04 methane concentration scale using a working standard internally calibrated to NOAA certified air standards. Concentrations are corrected for gravitational fractionation and solubility effects in the melt-refreeze extraction. Data are available via FTP in Microsoft Excel (.xls) format.
#------------------
# Publication 
#	Authors: Jérôme Chappellaz, Thomas Blunier, Sophie Kints, André Dällenbach, Jean-Marc Barnola, Jakob Schwander, Dominique Raynaud, Bernhard Stauffer
#	Published_Date_or_Year: 1997-07-20     
#	Published_Title: Changes in the atmospheric CH4 gradient between Greenland and Antarctica during the Holocene 
#	Journal_Name: Journal of Geophysical Research: Atmospheres
#	Volume: 102
#	Edition: 
#	Issue: D13
#	Pages:
#	Report_Number: 
#	DOI: 10.1029/97JD01017
#	Online_Resource: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/97JD01017
#	Full_Citation: 
#	Abstract: High-resolution records of atmospheric methane over the last 11,500 years have been obtained from two Antarctic ice cores (D47 and Byrd) and a Greenland core (Greenland Ice Core Project). These cores show similar trapping conditions for trace gases in the ice combined with a comparable sampling resolution; this together with a good relative chronology, provided by unequivocal CH4 features, allows a direct comparison of the synchronized Greenland and Antarctic records, and it reveals significant changes in the interpolar difference of CH4 mixing ratio with time. On the average, over the full Holocene records, we find an interpolar difference of 44±7 ppbv. A minimum difference of 33±7 ppbv is observed from 7 to 5 kyr B.P. whereas the maximum gradient (50±3 ppbv) took place from 5 to 2.5 kyr B.P. A gradient of 44±4 ppbv is observed during the early Holocene (11.5 to 9.5 kyr B.P). We use a three-box model to translate the measured differences into quantitative contributions of methane sources in the tropics and the middle to high latitudes of the northern hemisphere. The model results support the previous interpretation that past natural CH4 sources mainly lay in tropical regions, but it also suggests that boreal regions provided a significant contribution to the CH4 budget especially at the start of the Holocene. The growing extent of peat bogs in boreal regions would also have counterbalanced the drying of the tropics over the second half of the Holocene. Finally, our model results suggest a large source increase in tropical regions from the late Holocene to the last millennium, which may partly be caused by anthropogenic emissions.
#------------------
# Publication 
#	Authors: Edward J. Brook, Todd Sowers, Joe Orchardo
#	Published_Date_or_Year: 1996-08-23      
#	Published_Title: Rapid Variations in Atmospheric Methane Concentration During the Past 110,000 Years
#	Journal_Name: Science
#	Volume: 273
#	Edition: 
#	Issue: 5278
#	Pages: 1087-1091
#	Report_Number: 
#	DOI: 10.1126/science.273.5278.1087 
#	Online_Resource: http://science.sciencemag.org/content/273/5278/1087
#	Full_Citation: 
#	Abstract: A methane record from the GISP2 ice core reveals that millennial-scale variations in atmospheric methane concentration characterized much of the past 110,00 years. As previously observed in a shorter record from central Greenland, abrupt concentration shifts of about 50 to 300 parts per billion by volume were coeval with most of the interstadial warming events (better known as Dansgaard-Oeschger events) recorded in the GISP2 ice core throughout the last glacial period. The magnitude of the rapid concentration shifts varied on a longer time scale in a manner consistent with variations in Northern Hemisphere summer insolation, which suggests that insolation may have modulated the effects of interstadial climate change on the terrestrial biosphere.
#------------------
# Publication 
#	Authors: T. Blunier, J. Chappellaz, J. Schwander, B. Stauffer, D. Raynaud
#	Published_Date_or_Year: 1995-03-02      
#	Published_Title: Variations in atmospheric methane concentration during the Holocene epoch
#	Journal_Name: Nature
#	Volume: 374
#	Edition: 
#	Issue: 6517
#	Pages: 46-49
#	Report_Number: 
#	DOI: 10.1038/374046a0
#	Online_Resource: https://www.nature.com/articles/374046a0
#	Full_Citation: 
#	Abstract: RECORDS of the variation in atmospheric methane concentration have been obtained from ice cores for the past 1,000 years and for the period 8,000-220,000 yr BP, but data for the intervening period, spanning most of the present interglacial period (Holocene), are patchy. Here we present a continuous, high-resolution record of atmospheric methane from 8,000 to 1,000 yr BP, from the GRIP ice core in central Greenland. Unlike most other climate proxies from ice cores (such as oxygen isotope composition and electrical conductivity), methane concentrations show significant variations-up to 15%-during the Holocene. We have proposed that variations in the hydrological cycle at low latitudes are the dominant control on past levels of atmospheric methane. This is now supported by the observation that the lowest methane concentrations in our new record occur in the mid-Holocene, when many tropical lakes dried up. The concentration increases during the Late Holocene, probably owing to an increasing contribution from northern wetlands.
#------------------
# Publication 
#	Authors: J. Chappellaz, T. Bluniert, D. Raynaud, J. M. Barnola, J. Schwander, B. Stauffert
#	Published_Date_or_Year: 1993-12-03     
#	Published_Title: Synchronous changes in atmospheric CH4 and Greenland climate between 40 and 8 kyr BP
#	Journal_Name: Nature
#	Volume: 366
#	Edition: 
#	Issue: 
#	Pages: 443-445
#	Report_Number: 
#	DOI: 10.1038/366443a0
#	Online_Resource: https://www.nature.com/articles/366443a0
#	Full_Citation: 
#	Abstract: ICE-CORE reconstructions of atmospheric methane concentrations for the past 220 kyr have revealed large variations associated with different climatic periods. But the phase relationship between climate and methane has been uncertain because of dating uncertainties and the coarse sampling interval of available methane records. Here we present a high-resolution record of atmospheric methane from 40 to 8 kyr ago from the GRIP ice core in Greenland. Our improved resolution and dating allow us to conclude that the large changes in atmospheric methane concentration during the last deglaciation were in phase (±200 years) with the variations in Greenland climate. Our results confirm the previous observation that methane increased to Holocene levels when much of the Northern wetlands was still ice-covered, lending support to the suggestion that low-latitude wetlands were responsible for the observed changes. We observe oscillations in methane concentration associated with the warm periods (interstadials) that occurred throughout the glacial period, suggesting that the interstadials were at least hemispheric in their extent. We propose that variations in the hydrological cycle at low latitudes may be responsible for the variations in both methane and Greenland temperature during the interstadials.
#------------------
# Funding_Agency 
#	Funding_Agency_Name: European Research Council 
#	Grant: 226172 
#------------------
# Funding_Agency 
#	Funding_Agency_Name: Swiss National Science Foundation 
#	Grant:  
#------------------
# Site_Information 
#	Site_Name: Greenland Ice Core Composite
#	Location: North America>Greenland
#	Country:  
#	Northernmost_Latitude: 75.1
# 	Southernmost_Latitude: 72.5
# 	Easternmost_Longitude: -37.6
# 	Westernmost_Longitude: -42.3
# 	Elevation:  
#------------------
# Data_Collection   
#	Collection_Name: Beck2018NorthCH4 
#	Earliest_Year: 11978
#	Most_Recent_Year: 51
#	Time_Unit: Cal. Year BP
#	Core_Length: 
#	Notes: 
#------------------
# Chronology_Information
#	Chronology: 
# 	
#----------------	
# Variables 
#
# Data variables follow are preceded by "##" in columns one and two.
# Data line variables format:  one per line, shortname-tab-variable components (what, material, error, units, seasonality, data type,detail, method, C or N for Character or Numeric data, free text) 
#
## depth_m	depth, , , m, , , , ,N,
## gas_age_calBP	age, gas, , calendar years before present, , , , ,N,
## CH4_raw_ppb	methane, , , ppb, ,ice core,,,N,
## CH4_ppb	methane, , , ppb, ,ice core,,,N,corrected for intelaboratory differences
## CH4_ppb_err	methane error, , , ppb, ,ice core,,,N,
## data_origin	data origin,,,,,,,,C,		
#
#----------------
# Data:
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing Values:  
#
depth_m	gas_age_calBP	CH4_raw_ppb	CH4_ppb	CH4_ppb_err	data_origin
95.98	51.8	910.7	908.9	10.0	GISP2_Br09
99.24	64.8	894.0	892.2	10.0	GISP2_Br09
104.05	89.4	853.6	851.8	10.0	GISP2_Br09
111.37	102.0	784.0	801.7	10.0	GRIP_Fl01
107.05	103.0	839.6	837.8	10.0	GISP2_Br09
107.30	103.1	829.5	827.7	10.0	GISP2_Br09
109.56	112.0	826.9	825.1	10.0	GISP2_Br09
111.61	121.5	819.8	813.6	2.4	GISP2_Mi13
111.70	121.8	819.7	817.9	10.0	GISP2_Br09
113.15	126.9	801.8	795.6	2.4	GISP2_Mi13
113.95	129.7	799.2	793.1	2.4	GISP2_Mi13
114.77	132.7	787.2	781.0	2.4	GISP2_Mi13
116.17	137.6	785.9	779.8	2.4	GISP2_Mi13
116.28	138.0	789.2	787.4	10.0	GISP2_Br09
116.30	138.1	739.0	773.1	10.0	GISP2_Br96
116.70	139.5	737.0	771.1	10.0	GISP2_Br96
117.30	141.7	753.0	787.1	10.0	GISP2_Br96
117.60	142.8	754.0	788.1	10.0	GISP2_Br96
118.35	145.5	785.1	778.9	2.4	GISP2_Mi13
122.07	148.3	744.0	761.7	18.0	GRIP_Fl01
119.05	148.4	778.5	772.4	2.4	GISP2_Mi13
119.95	152.2	788.2	786.4	10.0	GISP2_Br09
120.57	154.9	783.8	777.7	2.4	GISP2_Mi13
121.68	159.6	787.4	781.3	2.4	GISP2_Mi13
122.55	163.3	770.5	764.4	2.4	GISP2_Mi13
123.04	165.4	781.3	775.1	2.4	GISP2_Mi13
123.88	169.2	779.9	778.1	10.0	GISP2_Br09
127.58	172.7	734.0	751.7	10.0	GRIP_Fl01
124.79	173.3	768.6	762.4	2.4	GISP2_Mi13
125.45	176.3	764.8	758.6	2.4	GISP2_Mi13
127.41	185.1	761.8	755.6	2.4	GISP2_Mi13
128.17	188.1	756.5	750.3	2.4	GISP2_Mi13
128.95	191.2	771.0	769.2	10.0	GISP2_Br09
129.06	191.6	764.8	763.0	10.0	GISP2_Br09
132.68	195.2	718.0	735.7	10.0	GRIP_Fl01
130.09	195.7	765.0	758.8	2.4	GISP2_Mi13
130.88	198.8	760.1	753.9	2.4	GISP2_Mi13
131.56	201.4	755.6	749.5	2.4	GISP2_Mi13
133.05	207.1	753.5	747.3	2.4	GISP2_Mi13
133.90	210.2	747.0	745.2	10.0	GISP2_Br09
134.72	213.2	743.0	736.8	2.4	GISP2_Mi13
135.82	217.2	740.9	734.7	2.4	GISP2_Mi13
139.05	229.2	731.1	725.0	2.4	GISP2_Mi13
142.45	242.4	734.2	728.0	2.4	GISP2_Mi13
143.05	245.0	729.8	728.0	10.0	GISP2_Br09
144.07	246.9	702.0	719.7	16.0	GRIP_Fl01
146.35	259.1	742.1	736.0	2.4	GISP2_Mi13
147.10	262.4	730.0	764.1	10.0	GISP2_Br96
149.30	272.1	701.0	735.1	10.0	GISP2_Br96
149.58	272.3	720.0	737.7	10.0	GRIP_Fl01
149.44	272.7	740.1	733.9	2.4	GISP2_Mi13
151.30	281.0	694.0	728.1	10.0	GISP2_Br96
151.95	283.9	731.8	725.6	2.4	GISP2_Mi13
152.49	286.1	738.1	736.3	10.0	GISP2_Br09
154.10	292.8	704.0	738.1	10.0	GISP2_Br96
154.15	293.0	733.9	732.1	10.0	GISP2_Br09
133.81	294.1	733.0	733.0	9.0	NGRIP_Be18
154.57	294.8	717.0	734.7	10.0	GRIP_Fl01
156.05	300.8	734.5	728.4	2.4	GISP2_Mi13
159.05	313.5	736.0	729.8	2.4	GISP2_Mi13
163.05	331.3	728.6	722.5	2.4	GISP2_Mi13
165.95	345.1	725.2	719.0	2.4	GISP2_Mi13
165.58	345.3	710.0	727.7	16.5	GRIP_Fl01
168.97	357.7	720.8	714.7	2.4	GISP2_Mi13
170.95	365.9	729.4	723.3	2.4	GISP2_Mi13
172.05	370.3	732.9	726.7	2.4	GISP2_Mi13
171.58	372.8	733.0	750.7	10.0	GRIP_Fl01
174.27	379.1	748.8	742.6	2.4	GISP2_Mi13
175.20	382.8	761.3	755.2	2.4	GISP2_Mi13
175.30	383.2	770.4	768.6	10.0	GISP2_Br09
176.05	386.2	763.8	757.6	2.4	GISP2_Mi13
176.81	397.0	724.0	741.7	10.0	GRIP_Fl01
178.84	398.1	764.2	758.1	2.4	GISP2_Mi13
180.73	406.1	759.5	753.4	2.4	GISP2_Mi13
182.35	413.4	758.8	752.6	2.4	GISP2_Mi13
186.05	429.9	748.4	742.3	2.4	GISP2_Mi13
189.23	443.8	741.7	735.5	2.4	GISP2_Mi13
189.23	452.8	708.0	725.7	16.0	GRIP_Fl01
193.15	460.5	730.4	724.2	2.4	GISP2_Mi13
194.13	464.6	710.0	744.1	10.0	GISP2_Br96
195.18	468.9	721.0	714.8	2.4	GISP2_Mi13
196.15	472.7	718.2	712.1	2.4	GISP2_Mi13
198.39	481.6	718.2	712.0	2.4	GISP2_Br09
198.39	481.6	720.2	718.4	10.0	GISP2_Mi13
195.78	484.0	728.0	745.7	10.0	GRIP_Fl01
201.05	493.3	728.7	726.9	10.0	GISP2_Br09
201.88	496.9	723.8	717.7	2.4	GISP2_Mi13
198.82	497.1	705.0	722.7	10.0	GRIP_Fl01
203.05	502.2	722.4	716.2	2.4	GISP2_Mi13
203.55	504.4	723.4	717.3	2.4	GISP2_Mi13
205.05	510.9	721.3	715.1	2.4	GISP2_Mi13
207.60	521.9	714.0	707.9	2.4	GISP2_Mi13
208.21	524.5	715.0	708.9	2.4	GISP2_Mi13
210.95	535.0	719.3	713.1	2.4	GISP2_Mi13
212.05	539.2	730.8	729.0	10.0	GISP2_Br09
212.15	539.6	722.5	716.3	2.4	GISP2_Mi13
212.25	540.0	723.0	716.8	2.4	GISP2_Mi13
209.58	546.6	707.0	724.7	18.0	GRIP_Fl01
214.30	548.4	700.0	734.1	10.0	GISP2_Br96
216.05	555.5	729.6	723.4	2.4	GISP2_Mi13
219.45	570.4	729.7	723.6	2.4	GISP2_Mi13
215.56	576.2	729.0	746.7	10.0	GRIP_Fl01
221.76	581.4	720.3	718.5	10.0	GISP2_Br09
188.82	584.2	714.0	714.0	9.0	NGRIP_Be18
222.95	587.0	727.8	721.7	2.4	GISP2_Mi13
224.64	595.3	719.0	712.9	2.4	GISP2_Mi13
220.70	600.9	721.0	738.7	10.0	GRIP_Fl01
226.41	604.0	719.0	712.9	2.4	GISP2_Mi13
227.66	609.7	730.1	723.9	2.4	GISP2_Mi13
229.35	617.4	731.5	725.4	2.4	GISP2_Mi13
230.85	624.2	736.5	730.4	2.4	GISP2_Mi13
232.60	632.3	735.5	729.4	2.4	GISP2_Mi13
234.08	639.1	700.0	734.1	10.0	GISP2_Br96
234.23	639.8	737.2	731.1	2.4	GISP2_Mi13
235.05	643.8	738.6	736.8	10.0	GISP2_Br09
235.95	648.2	726.9	720.7	2.4	GISP2_Mi13
231.58	656.0	695.0	712.7	18.5	GRIP_Fl01
237.45	656.0	724.6	718.5	2.4	GISP2_Mi13
240.53	672.0	726.1	720.0	2.4	GISP2_Mi13
242.85	683.8	721.0	714.8	2.4	GISP2_Mi13
237.56	684.0	715.0	732.7	10.0	GRIP_Fl01
244.05	689.7	725.8	724.0	10.0	GISP2_Br09
246.16	700.1	721.0	719.2	10.0	GISP2_Br09
246.36	701.1	717.2	711.0	2.4	GISP2_Mi13
242.57	709.7	727.0	744.7	10.0	GRIP_Fl01
249.09	715.0	716.5	710.4	2.4	GISP2_Mi13
251.45	727.0	724.0	717.9	2.4	GISP2_Mi13
253.35	736.2	731.8	725.7	2.4	GISP2_Mi13
254.49	741.7	733.4	727.2	2.4	GISP2_Mi13
255.95	748.9	737.1	731.0	2.4	GISP2_Mi13
257.13	754.8	739.2	733.1	2.4	GISP2_Mi13
257.23	755.3	739.4	733.2	2.4	GISP2_Mi13
260.60	772.4	738.1	731.9	2.4	GISP2_Mi13
263.23	785.8	738.7	732.5	2.4	GISP2_Mi13
259.52	791.5	718.0	735.7	10.0	GRIP_Fl01
265.32	795.4	740.0	733.8	2.4	GISP2_Mi13
266.81	801.7	743.0	741.2	10.0	GISP2_Br09
270.95	819.1	731.4	725.2	2.4	GISP2_Mi13
273.15	828.5	730.9	724.8	2.4	GISP2_Mi13
274.10	833.3	715.0	749.1	10.0	GISP2_Br96
276.05	843.0	729.2	723.1	2.4	GISP2_Mi13
279.56	857.1	727.0	720.8	2.4	GISP2_Mi13
281.58	864.9	721.4	715.2	2.4	GISP2_Mi13
275.98	871.4	709.0	726.7	10.0	GRIP_Fl01
283.62	872.6	713.0	706.9	2.4	GISP2_Mi13
284.46	875.7	710.9	704.8	2.4	GISP2_Mi13
286.52	883.4	726.1	719.9	2.4	GISP2_Mi13
288.05	889.9	726.7	720.6	2.4	GISP2_Mi13
289.07	894.4	730.9	729.1	10.0	GISP2_Br09
281.07	895.2	711.0	728.7	10.0	GRIP_Fl01
289.95	898.3	730.1	723.9	2.4	GISP2_Mi13
291.41	904.7	727.4	721.2	2.4	GISP2_Mi13
294.15	916.0	725.1	718.9	2.4	GISP2_Mi13
295.64	922.1	722.2	716.0	2.4	GISP2_Mi13
296.05	923.8	728.3	722.1	2.4	GISP2_Mi13
299.95	940.4	717.1	710.9	2.4	GISP2_Mi13
292.07	948.6	705.0	722.7	10.0	GRIP_Fl01
303.15	953.2	711.5	705.3	2.4	GISP2_Mi13
304.95	960.2	708.6	702.4	2.4	GISP2_Mi13
307.95	972.6	703.9	697.8	2.4	GISP2_Mi13
308.70	975.9	711.9	710.1	10.0	GISP2_Br09
311.28	987.1	694.9	688.7	2.4	GISP2_Mi13
311.38	987.6	699.5	693.3	2.4	GISP2_Mi13
314.10	1000.6	663.0	697.1	10.0	GISP2_Br96
314.23	1001.2	691.7	685.6	2.4	GISP2_Mi13
317.95	1019.4	701.0	694.8	2.4	GISP2_Mi13
320.89	1030.8	695.2	689.0	2.4	GISP2_Mi13
309.09	1031.8	679.0	696.7	10.0	GRIP_Fl01
324.95	1044.1	693.5	687.3	2.4	GISP2_Mi13
328.95	1066.8	696.3	690.2	2.4	GISP2_Mi13
320.07	1085.6	673.0	690.7	20.5	GRIP_Fl01
331.95	1085.7	689.3	683.2	2.4	GISP2_Mi13
334.95	1101.6	693.8	687.7	2.4	GISP2_Mi13
335.05	1102.2	698.8	697.0	10.0	GISP2_Br09
338.95	1124.3	694.6	688.4	2.4	GISP2_Mi13
340.95	1134.2	683.9	677.8	2.4	GISP2_Mi13
331.09	1140.0	652.0	669.7	10.0	GRIP_Fl01
344.10	1150.5	682.0	716.1	10.0	GISP2_Br96
344.75	1153.9	667.4	661.2	2.4	GISP2_Mi13
345.71	1159.1	666.2	660.0	2.4	GISP2_Mi13
341.61	1192.3	682.0	699.7	18.5	GRIP_Fl01
359.74	1235.7	689.4	687.6	10.0	GISP2_Br09
359.84	1236.3	694.1	687.9	2.4	GISP2_Mi13
353.09	1247.9	669.0	686.7	10.0	GRIP_Fl01
363.05	1252.4	683.3	677.1	2.4	GISP2_Mi13
366.95	1270.0	679.1	673.0	2.4	GISP2_Mi13
370.95	1288.0	676.1	669.9	2.4	GISP2_Mi13
363.58	1300.1	688.0	705.7	19.0	GRIP_Fl01
373.95	1301.7	679.0	672.9	2.4	GISP2_Mi13
375.35	1308.0	676.0	669.9	2.4	GISP2_Mi13
376.35	1312.3	676.8	670.6	2.4	GISP2_Mi13
377.95	1319.2	674.5	668.3	2.4	GISP2_Mi13
379.05	1324.1	687.4	685.6	10.0	GISP2_Br09
381.16	1333.6	691.3	685.2	2.4	GISP2_Mi13
383.95	1346.3	694.2	688.0	2.4	GISP2_Mi13
325.23	1349.6	711.3	711.3	9.0	NGRIP_Be18
375.07	1356.6	687.0	704.7	10.0	GRIP_Fl01
386.95	1360.0	697.5	691.4	2.4	GISP2_Mi13
392.15	1385.3	703.9	697.7	2.4	GISP2_Mi13
392.95	1389.1	702.1	696.0	2.4	GISP2_Mi13
393.00	1389.3	665.0	699.1	10.0	GISP2_Br96
385.03	1408.0	666.0	683.7	17.0	GRIP_Fl01
397.16	1408.6	695.1	689.0	2.4	GISP2_Mi13
397.30	1409.2	693.1	691.3	10.0	GISP2_Br09
398.05	1412.6	689.9	683.7	2.4	GISP2_Mi13
399.95	1421.0	677.1	670.9	2.4	GISP2_Mi13
403.05	1432.4	675.2	669.0	2.4	GISP2_Mi13
403.85	1435.1	677.7	671.6	2.4	GISP2_Mi13
406.35	1443.5	690.9	684.8	2.4	GISP2_Mi13
408.95	1454.7	683.4	677.2	2.4	GISP2_Mi13
411.05	1464.1	679.0	672.8	2.4	GISP2_Mi13
397.08	1469.9	661.0	678.7	10.0	GRIP_Fl01
413.05	1473.6	670.3	664.2	2.4	GISP2_Mi13
415.00	1483.2	659.0	693.1	10.0	GISP2_Br96
417.25	1494.2	674.2	668.0	2.4	GISP2_Mi13
418.95	1502.8	673.7	671.9	10.0	GISP2_Br09
420.05	1508.3	675.6	669.5	2.4	GISP2_Mi13
407.58	1524.2	664.0	681.7	17.5	GRIP_Fl01
423.05	1524.3	665.9	659.7	2.4	GISP2_Mi13
425.95	1538.0	659.4	653.2	2.4	GISP2_Mi13
427.35	1544.6	667.6	661.4	2.4	GISP2_Mi13
428.95	1552.6	673.5	667.3	2.4	GISP2_Mi13
431.95	1567.3	683.0	676.8	2.4	GISP2_Mi13
434.35	1577.8	683.1	677.0	2.4	GISP2_Mi13
418.56	1578.4	656.0	673.7	10.0	GRIP_Fl01
435.00	1580.6	651.0	685.1	10.0	GISP2_Br96
436.30	1586.3	683.2	681.4	10.0	GISP2_Br09
438.05	1593.9	680.8	674.6	2.4	GISP2_Mi13
440.95	1607.1	683.5	677.3	2.4	GISP2_Mi13
444.05	1627.6	677.9	671.8	2.4	GISP2_Mi13
429.58	1635.3	675.0	692.7	18.5	GRIP_Fl01
447.05	1647.4	677.9	671.7	2.4	GISP2_Mi13
448.25	1654.8	679.1	672.9	2.4	GISP2_Mi13
449.65	1663.3	690.1	684.0	2.4	GISP2_Mi13
452.95	1680.5	692.0	685.9	2.4	GISP2_Mi13
455.00	1690.8	654.0	688.1	10.0	GISP2_Br96
455.45	1693.1	685.6	679.5	2.4	GISP2_Mi13
441.09	1694.4	662.0	679.7	10.0	GRIP_Fl01
458.05	1705.7	685.7	683.9	10.0	GISP2_Br09
458.95	1710.1	690.6	684.5	2.4	GISP2_Mi13
462.10	1724.4	688.6	682.4	2.4	GISP2_Mi13
464.05	1737.2	678.2	672.0	2.4	GISP2_Mi13
466.75	1752.3	676.4	670.2	2.4	GISP2_Mi13
451.58	1753.8	679.0	696.7	19.5	GRIP_Fl01
468.65	1761.3	683.0	676.8	2.4	GISP2_Mi13
470.33	1770.0	683.7	677.5	2.4	GISP2_Mi13
471.95	1779.2	690.4	684.3	2.4	GISP2_Mi13
473.49	1787.9	678.8	672.6	2.4	GISP2_Mi13
474.95	1796.0	683.4	677.3	2.4	GISP2_Mi13
475.10	1796.8	637.0	671.1	10.0	GISP2_Br96
475.55	1799.3	689.3	683.1	2.4	GISP2_Mi13
478.45	1812.0	676.7	670.5	2.4	GISP2_Mi13
478.65	1812.7	683.3	681.5	10.0	GISP2_Br09
479.46	1815.7	684.6	678.5	2.4	GISP2_Mi13
463.09	1815.8	676.0	693.7	10.0	GRIP_Fl01
481.10	1821.7	687.5	681.3	2.4	GISP2_Mi13
483.05	1829.4	684.8	678.6	2.4	GISP2_Mi13
485.95	1841.3	677.7	671.6	2.4	GISP2_Mi13
488.92	1854.1	674.8	668.7	2.4	GISP2_Mi13
491.55	1865.7	674.1	668.0	2.4	GISP2_Mi13
473.58	1869.1	638.0	655.7	17.0	GRIP_Fl01
494.35	1879.3	666.0	659.8	2.4	GISP2_Mi13
497.05	1893.2	659.8	653.7	2.4	GISP2_Mi13
498.05	1898.6	680.5	678.7	10.0	GISP2_Br09
499.00	1903.7	655.0	689.1	10.0	GISP2_Br96
500.95	1914.1	657.7	651.5	2.4	GISP2_Mi13
485.09	1926.9	656.0	673.7	10.0	GRIP_Fl01
503.95	1929.4	652.0	645.9	2.4	GISP2_Mi13
504.40	1931.6	651.2	645.1	2.4	GISP2_Mi13
505.95	1938.9	661.1	654.9	2.4	GISP2_Mi13
507.35	1945.5	661.4	655.2	2.4	GISP2_Mi13
507.65	1947.0	664.4	658.2	2.4	GISP2_Mi13
508.95	1953.6	675.1	669.0	2.4	GISP2_Mi13
509.93	1958.6	681.7	675.5	2.4	GISP2_Mi13
510.35	1960.7	680.4	674.3	2.4	GISP2_Mi13
510.95	1963.8	677.3	671.2	2.4	GISP2_Mi13
511.95	1968.7	668.0	661.9	2.4	GISP2_Mi13
512.51	1971.4	669.4	663.3	2.4	GISP2_Mi13
513.36	1975.4	669.5	663.4	2.4	GISP2_Mi13
513.95	1978.3	662.8	656.6	2.4	GISP2_Mi13
495.60	1982.5	663.0	680.7	21.5	GRIP_Fl01
516.95	1992.6	661.6	655.5	2.4	GISP2_Mi13
517.35	1994.5	666.6	664.8	10.0	GISP2_Br09
519.15	2003.1	656.7	650.6	2.4	GISP2_Mi13
520.15	2008.6	654.0	647.9	2.4	GISP2_Mi13
523.95	2031.2	655.5	649.3	2.4	GISP2_Mi13
507.07	2044.1	645.0	662.7	10.0	GRIP_Fl01
526.95	2049.6	656.6	650.4	2.4	GISP2_Mi13
528.45	2059.7	654.9	648.7	2.4	GISP2_Mi13
448.43	2077.5	642.1	642.1	9.0	NGRIP_Be18
531.45	2078.2	655.6	649.5	2.4	GISP2_Mi13
533.05	2087.1	659.3	653.1	2.4	GISP2_Mi13
535.10	2096.3	626.0	660.1	10.0	GISP2_Br96
536.05	2100.6	650.0	643.8	2.4	GISP2_Br09
536.05	2100.6	651.8	650.0	10.0	GISP2_Mi13
517.58	2102.7	636.0	653.7	18.0	GRIP_Fl01
539.35	2116.2	645.6	639.5	2.4	GISP2_Mi13
541.52	2126.9	646.5	640.4	2.4	GISP2_Mi13
543.95	2139.8	651.0	644.9	2.4	GISP2_Mi13
545.65	2148.5	655.7	649.5	2.4	GISP2_Mi13
528.56	2163.3	640.0	657.7	10.0	GRIP_Fl01
548.89	2164.2	653.1	646.9	2.4	GISP2_Mi13
549.95	2169.3	652.9	646.8	2.4	GISP2_Mi13
551.35	2176.0	651.0	644.9	2.4	GISP2_Mi13
553.35	2185.6	645.8	639.7	2.4	GISP2_Mi13
555.00	2193.3	639.0	673.1	10.0	GISP2_Br96
555.15	2194.0	656.9	655.1	10.0	GISP2_Br09
555.95	2197.8	652.0	645.9	2.4	GISP2_Mi13
556.65	2201.0	657.8	651.7	2.4	GISP2_Mi13
559.95	2216.3	668.6	662.5	2.4	GISP2_Mi13
539.58	2225.5	630.0	647.7	20.0	GRIP_Fl01
563.15	2231.1	668.3	662.1	2.4	GISP2_Mi13
564.70	2238.3	670.0	663.9	2.4	GISP2_Mi13
566.30	2245.7	657.2	651.1	2.4	GISP2_Mi13
569.05	2258.4	647.2	641.1	2.4	GISP2_Mi13
572.36	2273.7	647.8	641.6	2.4	GISP2_Mi13
573.55	2279.2	641.2	635.0	2.4	GISP2_Mi13
574.15	2282.0	645.9	644.1	10.0	GISP2_Br09
574.70	2284.6	640.4	634.2	2.4	GISP2_Mi13
551.08	2288.0	639.0	656.7	10.0	GRIP_Fl01
576.39	2293.1	642.5	636.4	2.4	GISP2_Mi13
578.15	2302.1	650.7	644.6	2.4	GISP2_Mi13
579.00	2306.3	637.0	671.1	10.0	GISP2_Br96
581.85	2320.5	656.7	650.6	2.4	GISP2_Mi13
582.55	2323.9	656.7	650.5	2.4	GISP2_Mi13
583.55	2328.7	664.9	658.8	2.4	GISP2_Mi13
584.15	2331.6	657.8	651.6	2.4	GISP2_Mi13
584.65	2334.0	661.3	655.2	2.4	GISP2_Mi13
585.65	2338.7	657.5	651.4	2.4	GISP2_Mi13
587.65	2348.4	654.8	648.6	2.4	GISP2_Mi13
561.58	2350.4	638.0	655.7	20.0	GRIP_Fl01
589.05	2355.2	663.1	657.0	2.4	GISP2_Mi13
591.95	2370.2	657.1	651.0	2.4	GISP2_Mi13
593.70	2380.3	658.0	656.2	10.0	GISP2_Br09
594.95	2387.5	651.5	645.4	2.4	GISP2_Mi13
596.81	2397.1	650.3	644.1	2.4	GISP2_Mi13
598.05	2403.6	645.4	639.3	2.4	GISP2_Mi13
601.24	2422.8	643.1	637.0	2.4	GISP2_Mi13
575.84	2430.6	631.0	648.7	10.0	GRIP_Fl01
603.95	2443.4	642.0	635.9	2.4	GISP2_Mi13
579.17	2450.1	634.0	651.7	18.0	GRIP_Fl01
606.95	2468.5	644.4	638.3	2.4	GISP2_Mi13
609.51	2487.9	641.4	635.3	2.4	GISP2_Mi13
612.53	2507.8	646.2	640.1	2.4	GISP2_Mi13
612.63	2508.3	648.6	646.8	10.0	GISP2_Br09
614.87	2520.4	649.2	643.1	2.4	GISP2_Mi13
615.10	2521.6	596.0	630.1	10.0	GISP2_Br96
615.17	2522.1	640.2	634.0	2.4	GISP2_Mi13
616.95	2534.4	634.3	628.1	2.4	GISP2_Mi13
595.09	2540.5	628.0	645.7	10.0	GRIP_Fl01
618.95	2548.1	635.6	629.5	2.4	GISP2_Mi13
621.75	2561.9	637.8	631.6	2.4	GISP2_Mi13
528.19	2577.3	645.5	645.5	9.0	NGRIP_Be18
624.75	2578.8	641.9	635.8	2.4	GISP2_Mi13
627.75	2595.3	649.5	643.3	2.4	GISP2_Mi13
605.58	2595.7	620.0	637.7	16.5	GRIP_Fl01
629.30	2603.8	643.4	641.6	10.0	GISP2_Br09
630.30	2609.3	647.4	641.2	2.4	GISP2_Mi13
632.45	2622.1	644.3	638.2	2.4	GISP2_Mi13
634.10	2630.6	615.0	649.1	10.0	GISP2_Br96
634.91	2634.8	646.0	639.8	2.4	GISP2_Mi13
638.67	2653.4	652.3	646.1	2.4	GISP2_Mi13
617.09	2661.2	610.0	627.7	10.0	GRIP_Fl01
641.40	2666.5	653.3	647.1	2.4	GISP2_Mi13
643.07	2673.5	645.1	639.0	2.4	GISP2_Mi13
644.65	2680.2	643.3	637.2	2.4	GISP2_Mi13
646.15	2686.6	641.6	635.4	2.4	GISP2_Mi13
648.15	2695.3	634.3	628.1	2.4	GISP2_Mi13
648.90	2698.9	639.6	637.8	10.0	GISP2_Br09
650.93	2708.7	637.7	631.6	2.4	GISP2_Mi13
627.58	2722.8	624.0	641.7	18.5	GRIP_Fl01
653.85	2726.8	638.3	632.1	2.4	GISP2_Mi13
655.85	2734.9	640.5	634.4	2.4	GISP2_Mi13
658.70	2746.9	648.5	642.4	2.4	GISP2_Mi13
638.56	2788.4	632.0	649.7	10.0	GRIP_Fl01
666.95	2790.1	644.5	642.7	10.0	GISP2_Br09
650.06	2854.4	617.0	634.7	20.5	GRIP_Fl01
685.94	2902.5	635.4	633.6	10.0	GISP2_Br09
661.09	2917.1	620.0	637.7	10.0	GRIP_Fl01
671.58	2980.1	606.0	623.7	16.5	GRIP_Fl01
702.95	2996.5	626.5	624.7	10.0	GISP2_Br09
597.10	3014.7	635.4	635.4	9.0	NGRIP_Be18
683.05	3052.9	606.0	623.7	10.0	GRIP_Fl01
719.05	3096.1	626.6	624.8	10.0	GISP2_Br09
694.07	3119.1	628.0	645.7	23.0	GRIP_Fl01
736.22	3199.8	648.3	646.5	10.0	GISP2_Br09
750.75	3284.0	629.6	627.8	10.0	GISP2_Br09
637.73	3284.7	632.2	632.2	9.0	NGRIP_Be18
755.10	3311.3	590.0	624.1	10.0	GISP2_Br96
756.00	3316.9	617.0	651.1	10.0	GISP2_Br96
730.42	3338.7	617.0	634.7	17.0	GRIP_Fl01
767.05	3378.5	651.6	649.8	10.0	GISP2_Br09
774.47	3422.7	607.0	641.1	10.0	GISP2_Br96
746.34	3438.3	607.0	624.7	10.0	GRIP_Fl01
785.05	3486.8	630.1	628.3	10.0	GISP2_Br09
762.87	3540.3	605.0	622.7	17.0	GRIP_Fl01
802.95	3596.2	623.5	621.7	10.0	GISP2_Br09
779.39	3643.6	640.0	657.7	10.0	GRIP_Fl01
794.72	3738.5	613.0	630.7	19.5	GRIP_Fl01
709.71	3763.0	639.5	639.5	9.0	NGRIP_Be18
835.70	3786.8	645.7	643.9	10.0	GISP2_Br09
836.15	3789.9	606.0	640.1	10.0	GISP2_Br96
812.93	3860.6	627.0	644.7	10.0	GRIP_Fl01
851.05	3887.1	658.1	656.3	10.0	GISP2_Br09
826.12	3945.4	618.0	635.7	13.5	GRIP_Fl01
867.07	3992.7	644.2	642.4	10.0	GISP2_Br09
874.10	4036.5	609.0	643.1	10.0	GISP2_Br96
841.86	4048.8	607.0	624.7	10.0	GRIP_Fl01
885.05	4105.6	609.8	608.0	10.0	GISP2_Br09
856.37	4148.6	606.0	623.7	18.5	GRIP_Fl01
901.46	4202.6	620.3	618.5	10.0	GISP2_Br09
781.19	4260.6	618.3	618.3	9.0	NGRIP_Be18
915.06	4289.5	640.1	638.3	10.0	GISP2_Br09
919.70	4322.7	598.0	632.1	10.0	GISP2_Br96
887.11	4352.4	608.0	625.7	21.5	GRIP_Fl01
901.46	4457.5	617.0	634.7	10.0	GRIP_Fl01
943.07	4474.0	610.0	644.1	10.0	GISP2_Br96
944.35	4482.9	630.1	628.3	10.0	GISP2_Br09
915.61	4556.9	622.0	639.7	17.0	GRIP_Fl01
962.70	4603.4	616.5	614.7	10.0	GISP2_Br09
930.11	4661.7	627.0	644.7	10.0	GRIP_Fl01
974.15	4684.0	598.0	632.1	10.0	GISP2_Br96
977.95	4707.2	641.5	639.7	10.0	GISP2_Br09
943.78	4761.8	610.0	627.7	18.0	GRIP_Fl01
852.75	4789.5	626.0	626.0	9.0	NGRIP_Be18
991.10	4796.9	588.0	622.1	10.0	GISP2_Br96
959.21	4880.2	604.0	621.7	10.0	GRIP_Fl01
1005.05	4890.3	642.5	640.7	10.0	GISP2_Br09
1014.60	4957.5	581.0	615.1	10.0	GISP2_Br96
973.32	4984.3	624.0	641.7	18.5	GRIP_Fl01
986.71	5077.3	593.0	610.7	10.0	GRIP_Fl01
1033.95	5095.9	610.1	608.3	10.0	GISP2_Br09
1038.37	5127.5	589.0	623.1	10.0	GISP2_Br96
1000.47	5176.6	573.0	590.7	15.0	GRIP_Fl01
1047.71	5189.8	606.8	605.0	10.0	GISP2_Br09
914.86	5253.5	603.9	603.9	9.0	NGRIP_Be18
1060.08	5280.0	608.8	607.0	10.0	GISP2_Br09
1074.20	5387.3	592.0	626.1	10.0	GISP2_Br96
1030.17	5401.8	592.0	609.7	16.5	GRIP_Fl01
1077.27	5410.7	629.2	627.4	10.0	GISP2_Br09
944.59	5477.7	609.4	609.4	9.0	NGRIP_Be18
1041.13	5489.4	590.0	607.7	10.0	GRIP_Fl01
1089.95	5503.0	602.7	600.9	10.0	GISP2_Br09
1100.95	5588.3	612.2	610.4	10.0	GISP2_Br09
1055.69	5604.6	594.0	611.7	19.5	GRIP_Fl01
1114.54	5693.4	587.0	621.1	10.0	GISP2_Br96
1114.91	5696.0	605.7	603.9	10.0	GISP2_Br09
1068.66	5709.3	585.0	602.7	10.0	GRIP_Fl01
1082.09	5810.6	611.0	628.7	15.5	GRIP_Fl01
1130.31	5818.4	629.2	627.4	10.0	GISP2_Br09
1134.90	5849.4	579.0	613.1	10.0	GISP2_Br96
997.70	5895.9	614.8	614.8	9.0	NGRIP_Be18
1140.95	5897.8	631.3	629.5	10.0	GISP2_Br09
1095.04	5911.6	607.0	624.7	10.0	GRIP_Fl01
1151.11	5980.1	624.4	622.6	10.0	GISP2_Br09
1107.72	6015.5	610.0	627.7	18.5	GRIP_Fl01
1165.68	6094.8	596.5	594.7	10.0	GISP2_Br09
1121.46	6132.7	611.0	628.7	10.0	GRIP_Fl01
1177.26	6186.3	641.4	639.6	10.0	GISP2_Br09
1133.53	6230.9	596.0	613.7	21.0	GRIP_Fl01
1185.61	6246.2	593.0	627.1	10.0	GISP2_Br96
1045.24	6277.5	648.7	648.7	9.0	NGRIP_Be18
1190.95	6290.1	636.5	634.7	10.0	GISP2_Br09
1194.15	6314.4	620.0	654.1	10.0	GISP2_Br96
1202.94	6382.8	653.9	652.1	10.0	GISP2_Br09
1158.25	6435.2	632.0	649.7	18.5	GRIP_Fl01
1215.95	6488.9	620.2	618.4	10.0	GISP2_Br09
1170.39	6542.8	628.0	645.7	10.0	GRIP_Fl01
1227.95	6589.5	631.3	629.5	10.0	GISP2_Br09
1181.97	6640.8	622.0	639.7	18.0	GRIP_Fl01
1235.50	6656.5	603.0	637.1	10.0	GISP2_Br96
1246.86	6748.6	625.0	623.2	10.0	GISP2_Br09
1195.14	6752.8	619.0	636.7	10.0	GRIP_Fl01
1206.72	6855.9	626.0	643.7	16.0	GRIP_Fl01
1261.95	6874.2	646.9	645.1	10.0	GISP2_Br09
1127.09	6954.3	661.4	661.4	9.0	NGRIP_Be18
1272.70	6960.8	656.5	654.7	10.0	GISP2_Br09
1219.34	6969.9	659.0	676.7	10.0	GRIP_Fl01
1230.92	7071.1	645.0	662.7	17.0	GRIP_Fl01
1287.95	7092.1	669.8	668.0	10.0	GISP2_Br09
1296.54	7170.4	635.0	669.1	10.0	GISP2_Br96
1244.06	7194.0	661.0	678.7	16.0	GRIP_Fl01
1300.30	7204.4	666.9	665.1	10.0	GISP2_Br09
1255.07	7290.3	634.0	651.7	16.5	GRIP_Fl01
1311.75	7300.3	650.6	648.8	10.0	GISP2_Br09
1320.36	7379.2	652.5	650.7	10.0	GISP2_Br09
1267.24	7400.1	628.0	645.7	17.0	GRIP_Fl01
1333.95	7498.1	673.2	671.4	10.0	GISP2_Br09
1278.73	7500.7	659.0	676.7	15.5	GRIP_Fl01
1334.90	7505.9	634.0	668.1	10.0	GISP2_Br96
1344.70	7595.5	677.2	675.4	10.0	GISP2_Br09
1290.92	7613.9	652.0	669.7	16.0	GRIP_Fl01
1354.90	7680.0	621.0	655.1	10.0	GISP2_Br96
1355.25	7683.0	668.2	666.4	10.0	GISP2_Br09
1302.43	7719.2	661.0	678.7	26.0	GRIP_Fl01
1364.05	7764.5	663.3	661.5	10.0	GISP2_Br09
1365.85	7779.3	653.6	651.8	10.0	GISP2_Br09
1366.05	7781.3	655.2	653.4	10.0	GISP2_Br09
1368.05	7798.0	658.3	656.5	10.0	GISP2_Br09
1313.79	7814.4	646.0	663.7	18.5	GRIP_Fl01
1372.05	7836.0	652.0	650.2	10.0	GISP2_Br09
1374.05	7854.3	650.6	648.8	10.0	GISP2_Br09
1375.10	7863.5	613.0	647.1	10.0	GISP2_Br96
1376.50	7876.1	661.9	660.1	10.0	GISP2_Br09
1378.15	7892.6	658.6	656.8	10.0	GISP2_Br09
1324.37	7910.5	629.0	646.7	19.5	GRIP_Fl01
1380.44	7911.2	650.9	649.1	10.0	GISP2_Br09
1384.05	7942.5	665.2	663.4	10.0	GISP2_Br09
1386.05	7963.5	667.3	665.5	10.0	GISP2_Br09
1243.43	7973.5	671.1	671.1	9.0	NGRIP_Be18
1388.05	7979.1	667.7	665.9	10.0	GISP2_Br09
1331.82	7979.7	644.0	661.7	18.0	GRIP_Fl01
1389.70	7993.8	677.6	675.8	10.0	GISP2_Br09
1390.05	7996.3	661.0	659.2	10.0	GISP2_Br09
1394.05	8030.4	678.1	676.3	10.0	GISP2_Br09
1395.25	8042.3	676.9	675.1	10.0	GISP2_Br09
1396.05	8049.3	671.3	669.5	10.0	GISP2_Br09
1398.05	8067.9	681.4	679.6	10.0	GISP2_Br09
1342.67	8084.6	638.0	655.7	10.0	GRIP_Fl01
1401.80	8103.5	665.4	663.6	10.0	GISP2_Br09
1402.05	8106.1	663.8	662.0	10.0	GISP2_Br09
1402.80	8113.4	661.2	659.4	10.0	GISP2_Br09
1403.70	8122.8	672.3	670.5	10.0	GISP2_Br09
1405.15	8135.6	654.8	653.0	10.0	GISP2_Br09
1406.05	8141.4	656.5	654.7	10.0	GISP2_Br09
1406.19	8143.7	660.6	658.8	10.0	GISP2_Br09
1407.05	8153.1	650.7	648.9	10.0	GISP2_Br09
1408.05	8163.0	629.1	627.3	10.0	GISP2_Br09
1408.81	8167.4	616.8	615.0	10.0	GISP2_Br09
1409.70	8173.2	611.6	609.8	10.0	GISP2_Br09
1410.10	8175.8	626.8	625.0	10.0	GISP2_Br09
1410.60	8180.7	615.9	614.1	10.0	GISP2_Br09
1411.21	8186.0	617.2	615.4	10.0	GISP2_Br09
1411.25	8186.3	611.3	609.5	10.0	GISP2_Br09
1411.60	8190.5	611.0	609.2	10.0	GISP2_Br09
1412.10	8195.9	603.9	602.1	10.0	GISP2_Br09
1412.60	8200.6	603.8	602.0	10.0	GISP2_Br09
1413.10	8205.8	589.0	587.2	10.0	GISP2_Br09
1413.25	8207.0	605.6	603.8	10.0	GISP2_Br09
1413.73	8211.4	585.6	583.8	10.0	GISP2_Br09
1354.06	8213.3	588.0	605.7	18.5	GRIP_Fl01
1414.10	8214.5	591.4	589.6	10.0	GISP2_Br09
1414.60	8218.2	589.4	587.6	10.0	GISP2_Br09
1415.10	8222.3	566.0	600.1	10.0	GISP2_Br96
1415.30	8224.4	602.0	600.2	10.0	GISP2_Br09
1415.65	8227.4	610.1	608.3	10.0	GISP2_Br09
1416.10	8230.5	620.8	619.0	10.0	GISP2_Br09
1416.25	8231.6	625.4	623.6	10.0	GISP2_Br09
1416.60	8235.3	629.5	627.7	10.0	GISP2_Br09
1417.10	8240.4	642.7	640.9	10.0	GISP2_Br09
1417.60	8245.5	643.7	641.9	10.0	GISP2_Br09
1418.10	8251.5	651.7	649.9	10.0	GISP2_Br09
1418.60	8257.5	663.5	661.7	10.0	GISP2_Br09
1419.10	8263.3	664.7	662.9	10.0	GISP2_Br09
1419.60	8269.3	674.3	672.5	10.0	GISP2_Br09
1360.17	8273.3	628.0	645.7	10.0	GRIP_Fl01
1420.10	8273.8	663.8	662.0	10.0	GISP2_Br09
1420.65	8280.5	659.6	657.8	10.0	GISP2_Br09
1421.08	8285.4	668.8	667.0	10.0	GISP2_Br09
1421.60	8291.6	663.7	661.9	10.0	GISP2_Br09
1422.10	8296.6	661.5	659.7	10.0	GISP2_Br09
1422.60	8302.4	669.8	668.0	10.0	GISP2_Br09
1423.09	8307.1	673.4	671.6	10.0	GISP2_Br09
1423.60	8311.6	673.8	672.0	10.0	GISP2_Br09
1364.65	8317.1	645.0	662.7	10.0	GRIP_Fl01
1424.34	8319.5	672.7	670.9	10.0	GISP2_Br09
1424.80	8324.9	669.3	667.5	10.0	GISP2_Br09
1426.05	8337.4	672.8	671.0	10.0	GISP2_Br09
1426.15	8338.7	673.3	671.5	10.0	GISP2_Br09
1428.05	8357.7	662.0	660.2	10.0	GISP2_Br09
1430.05	8375.8	665.6	663.8	10.0	GISP2_Br09
1432.05	8390.4	671.6	669.8	10.0	GISP2_Br09
1432.80	8397.1	677.6	675.8	10.0	GISP2_Br09
1435.00	8416.0	657.0	691.1	10.0	GISP2_Br96
1375.57	8428.6	652.0	669.7	21.5	GRIP_Fl01
1436.38	8430.2	669.9	668.1	10.0	GISP2_Br09
1438.05	8446.0	687.8	686.0	10.0	GISP2_Br09
1379.41	8468.3	649.0	666.7	10.0	GRIP_Fl01
1442.05	8486.6	673.7	671.9	10.0	GISP2_Br09
1442.15	8487.5	675.9	674.1	10.0	GISP2_Br09
1446.05	8522.8	677.3	675.5	10.0	GISP2_Br09
1448.05	8541.8	690.9	689.1	10.0	GISP2_Br09
1387.05	8545.1	652.0	669.7	10.0	GRIP_Fl01
1298.71	8548.1	686.4	686.4	9.0	NGRIP_Be18
1450.05	8558.2	691.4	689.6	10.0	GISP2_Br09
1452.05	8576.6	711.1	709.3	10.0	GISP2_Br09
1453.70	8591.0	682.2	680.4	10.0	GISP2_Br09
1455.10	8606.2	662.0	696.1	10.0	GISP2_Br96
1456.05	8615.2	706.3	704.5	10.0	GISP2_Br09
1458.05	8635.3	715.6	713.8	10.0	GISP2_Br09
1460.05	8653.0	703.9	702.1	10.0	GISP2_Br09
1460.15	8653.8	701.1	699.3	10.0	GISP2_Br09
1400.89	8686.5	674.0	691.7	10.0	GRIP_Fl01
1470.90	8756.5	690.4	688.6	10.0	GISP2_Br09
1408.57	8768.1	684.0	701.7	10.0	GRIP_Fl01
1475.10	8795.7	727.0	761.1	10.0	GISP2_Br96
1475.20	8796.9	697.5	695.7	10.0	GISP2_Br09
1481.35	8858.7	719.0	717.2	10.0	GISP2_Br09
1419.57	8885.2	690.0	707.7	19.5	GRIP_Fl01
1492.72	8962.9	703.8	702.0	10.0	GISP2_Br09
1495.00	8985.8	653.0	687.1	10.0	GISP2_Br96
1495.20	8987.4	704.2	702.4	10.0	GISP2_Br09
1431.05	9005.7	691.0	708.7	10.0	GRIP_Fl01
1341.62	9018.6	714.7	714.7	9.0	NGRIP_Be18
1502.05	9053.6	716.3	714.5	10.0	GISP2_Br09
1512.70	9161.6	717.7	715.9	10.0	GISP2_Br09
1516.10	9199.3	659.0	693.1	10.0	GISP2_Br96
1521.17	9252.2	719.6	717.8	10.0	GISP2_Br09
1458.07	9290.7	698.0	715.7	10.0	GRIP_Fl01
1529.70	9345.9	727.5	725.7	10.0	GISP2_Br09
1463.82	9347.4	710.0	727.7	22.0	GRIP_Fl01
1534.10	9390.1	724.7	722.9	10.0	GISP2_Br09
1535.00	9398.7	682.0	716.1	10.0	GISP2_Br96
1469.12	9403.8	664.0	681.7	10.0	GRIP_Fl01
1538.05	9433.1	714.3	712.5	10.0	GISP2_Br09
1474.57	9462.8	693.0	710.7	18.5	GRIP_Fl01
1546.70	9524.2	735.7	733.9	10.0	GISP2_Br09
1480.07	9524.7	691.0	708.7	10.0	GRIP_Fl01
1485.57	9589.1	695.0	712.7	18.0	GRIP_Fl01
1554.00	9605.5	710.0	744.1	10.0	GISP2_Br96
1555.05	9618.3	741.5	739.7	10.0	GISP2_Br09
1496.57	9708.5	715.0	732.7	19.5	GRIP_Fl01
1564.90	9730.2	735.4	733.6	10.0	GISP2_Br09
1401.75	9755.9	734.1	734.1	9.0	NGRIP_Be18
1502.10	9771.4	734.0	751.7	10.0	GRIP_Fl01
1573.05	9819.1	748.7	746.9	10.0	GISP2_Br09
1508.08	9839.6	726.0	743.7	20.5	GRIP_Fl01
1575.10	9845.2	749.0	783.1	10.0	GISP2_Br96
1513.08	9896.9	725.0	742.7	10.0	GRIP_Fl01
1581.30	9919.8	742.1	740.3	10.0	GISP2_Br09
1519.08	9965.3	712.0	729.7	18.0	GRIP_Fl01
1589.17	10009.4	754.8	753.0	10.0	GISP2_Br09
1595.00	10078.0	749.0	783.1	10.0	GISP2_Br96
1595.22	10079.3	728.7	726.9	10.0	GISP2_Br09
1529.57	10092.5	720.0	737.7	21.0	GRIP_Fl01
1597.30	10102.2	739.6	737.8	10.0	GISP2_Br09
1535.08	10158.2	719.0	736.7	10.0	GRIP_Fl01
1601.90	10160.0	703.0	737.1	10.0	GISP2_Br96
1602.10	10162.8	725.1	723.3	10.0	GISP2_Br09
1606.15	10214.9	762.1	760.3	10.0	GISP2_Br09
1540.90	10228.6	727.0	744.7	21.5	GRIP_Fl01
1608.10	10237.4	742.0	776.1	10.0	GISP2_Br96
1608.20	10238.7	744.9	743.1	10.0	GISP2_Br09
1546.08	10295.2	714.0	731.7	10.0	GRIP_Fl01
1614.70	10320.9	758.3	756.5	10.0	GISP2_Br09
1615.00	10324.3	708.0	742.1	10.0	GISP2_Br96
1551.57	10365.8	720.0	737.7	20.5	GRIP_Fl01
1621.19	10402.6	747.8	746.0	10.0	GISP2_Br09
1621.90	10412.1	701.0	735.1	10.0	GISP2_Br96
1557.08	10434.3	721.0	738.7	10.0	GRIP_Fl01
1628.20	10485.9	720.0	754.1	10.0	GISP2_Br96
1628.32	10487.4	750.7	748.9	10.0	GISP2_Br09
1562.57	10504.3	744.0	761.7	18.0	GRIP_Fl01
1629.70	10505.3	756.3	754.5	10.0	GISP2_Br09
1635.00	10574.4	716.0	750.1	10.0	GISP2_Br96
1635.20	10577.3	757.8	756.0	10.0	GISP2_Br09
1635.95	10588.1	754.5	752.7	10.0	GISP2_Br09
1460.65	10592.5	745.2	745.2	9.0	NGRIP_Be18
1573.57	10640.8	722.0	739.7	19.0	GRIP_Fl01
1579.08	10711.5	715.0	732.7	10.0	GRIP_Fl01
1644.90	10711.9	729.5	727.7	10.0	GISP2_Br09
1648.00	10757.5	732.0	766.1	10.0	GISP2_Br96
1584.57	10782.1	720.0	737.7	16.5	GRIP_Fl01
1651.20	10802.5	720.0	718.2	10.0	GISP2_Br09
1655.00	10855.2	732.0	766.1	10.0	GISP2_Br96
1655.27	10859.9	740.6	738.8	10.0	GISP2_Br09
1657.90	10902.6	728.3	726.5	10.0	GISP2_Br09
1595.57	10929.5	691.0	708.7	20.0	GRIP_Fl01
1661.90	10961.9	724.0	758.1	10.0	GISP2_Br96
1662.22	10967.3	738.7	736.9	10.0	GISP2_Br09
1663.95	10998.1	735.4	733.6	10.0	GISP2_Br09
1601.08	11003.1	689.0	706.7	10.0	GRIP_Fl01
1668.20	11060.5	741.0	775.1	10.0	GISP2_Br96
1668.33	11061.9	739.6	737.8	10.0	GISP2_Br09
1669.70	11075.0	741.6	739.8	10.0	GISP2_Br09
1606.57	11077.2	719.0	736.7	19.0	GRIP_Fl01
1612.10	11152.2	711.0	728.7	10.0	GRIP_Fl01
1674.95	11155.4	756.7	754.9	10.0	GISP2_Br09
1675.10	11157.9	738.0	772.1	10.0	GISP2_Br96
1617.57	11224.9	698.0	715.7	20.0	GRIP_Fl01
1680.12	11255.8	680.0	714.1	10.0	GISP2_Br96
1621.43	11277.9	716.0	733.7	10.0	GRIP_Fl01
1681.90	11298.5	681.0	715.1	10.0	GISP2_Br96
1625.82	11345.1	677.0	694.7	17.5	GRIP_Fl01
1626.92	11362.9	696.0	713.7	10.0	GRIP_Fl01
1685.00	11373.7	693.0	727.1	10.0	GISP2_Br96
1685.21	11379.3	726.0	724.2	10.0	GISP2_Br09
1628.61	11389.3	737.0	754.7	10.0	GRIP_Fl01
1686.17	11403.8	740.5	738.7	10.0	GISP2_Br09
1687.90	11444.7	709.0	743.1	10.0	GISP2_Br96
1688.20	11451.3	737.0	771.1	10.0	GISP2_Br96
1688.32	11453.6	741.2	739.4	10.0	GISP2_Br09
1635.33	11475.5	726.0	743.7	22.5	GRIP_Fl01
1636.27	11485.6	703.0	720.7	10.0	GRIP_Fl01
1637.63	11501.0	753.0	770.7	10.0	GRIP_Fl01
1691.15	11511.9	751.0	785.1	10.0	GISP2_Br96
1691.35	11514.8	765.8	764.0	10.0	GISP2_Br09
1640.07	11529.7	734.0	751.7	10.0	GRIP_Fl01
1693.00	11542.4	755.0	789.1	10.0	GISP2_Br96
1695.10	11575.4	769.0	803.1	10.0	GISP2_Br96
1695.35	11581.4	775.8	774.0	10.0	GISP2_Br09
1695.70	11589.8	686.0	720.1	10.0	GISP2_Br96
1644.48	11591.2	722.0	739.7	10.0	GRIP_Fl01
1696.12	11598.7	737.0	771.1	10.0	GISP2_Br96
1696.12	11598.7	738.0	772.1	10.0	GISP2_Br96
1645.23	11605.3	686.0	703.7	16.0	GRIP_Fl01
1645.62	11611.2	650.0	667.7	10.0	GRIP_Fl01
1697.00	11611.6	693.0	727.1	10.0	GISP2_Br96
1698.00	11634.6	625.0	659.1	10.0	GISP2_Br96
1646.72	11636.9	630.0	647.7	10.0	GRIP_Fl01
1699.00	11659.6	591.0	625.1	10.0	GISP2_Br96
1648.33	11680.1	497.0	514.7	10.0	GRIP_Fl01
1700.12	11687.2	536.0	570.1	10.0	GISP2_Br96
1648.92	11696.7	494.0	511.7	10.0	GRIP_Fl01
1700.58	11701.0	520.0	554.1	10.0	GISP2_Br96
1701.11	11717.7	508.0	542.1	10.0	GISP2_Br96
1701.50	11732.1	534.0	568.1	10.0	GISP2_Br96
1702.00	11750.6	489.0	523.1	10.0	GISP2_Br96
1651.08	11763.2	475.0	492.7	10.0	GRIP_Fl01
1651.63	11781.4	494.0	511.7	10.0	GRIP_Fl01
1652.26	11801.3	497.0	514.7	10.0	GRIP_Fl01
1704.12	11826.5	485.0	519.1	10.0	GISP2_Br96
1705.00	11855.6	521.0	555.1	10.0	GISP2_Br96
1654.93	11888.5	497.0	514.7	10.0	GRIP_Fl01
1706.12	11893.9	481.0	515.1	10.0	GISP2_Br96
1706.90	11922.0	495.0	529.1	10.0	GISP2_Br96
1706.90	11922.0	540.0	574.1	10.0	GISP2_Br96
1656.05	11923.6	488.0	505.7	16.0	GRIP_Fl01
1708.50	11978.1	525.0	559.1	10.0	GISP2_Br96