# WAIS Divide Ice Core 67,000 Year Discrete Sample Methane Data
#----------------------------------------------------------------------- 
#                World Data Service for Paleoclimatology, Boulder 
#                                  and 
#                     NOAA Paleoclimatology Program 
#             National Centers for Environmental Information (NCEI)
#----------------------------------------------------------------------- 
# 
# 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/19662 
# Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/wais2015ch4osu-glacial.txt
#
# Original_Source_URL: 
# 
# Description/Documentation lines begin with #
# Data lines have no #
#
# Archive: Ice Cores
#
# Parameter_Keywords: atmospheric gas 
#--------------------
# Contribution_Date
#	Date: 2016-01-12
#--------------------
# Title
#	Study_Name: WAIS Divide Ice Core 67,000 Year Discrete Sample Methane Data
#--------------------
# Investigators
# 	Investigators: Brook, E.; Sowers, T.
#--------------------
# Description_and_Notes
#	Description: Methane concentrations from discrete samples of the WAIS Divide Ice Core measured at Penn State University 
#	and Oregon State University.  All depths in meters below the surface.  All methane dry air mixing ratios in nano-mol per mol (ppb) 
#	on the NOAA04 scale.  Methane data have been corrected for blank offsets, solubility loss, and gravitational fractionation using 
#	interpolated d15N or N2 data reported in WAIS Divide Project Members (2015). Concentrations are slightly (less than 0.5 ppb) 
#	different in this file than in previous data reports because of an updated gravitational enrichment correction based on the 
#	newest d15N of N2 data.  All ages are given in years before 1950.0 C.E. (A.D.) on the WD2014 timescale.  
#	NaN = replicate data not included due to leak or broken sample. The "Combined WAIS Divide Methane" record combines the PSU 
#	and OSU data sets, and where they overlap, uses the higher resolution data set.  This combined file is the version of choice 
#	for users needing a complete discrete WAIS Divide methane data set. 
#	WAIS Divide Project Members: Christo Buizert, Betty Adrian, Jinho Ahn, Mary Albert, Richard B. Alley, Daniel Baggenstos, Thomas K. Bauska, Ryan C. Bay, Brian B. Bencivengo, Charles R. Bentley, Edward J. Brook, Nathan J. Chellman, Gary D. Clow, Jihong Cole-Dai, Howard Conway, Eric Cravens, Kurt M. Cuffey, Nelia W. Dunbar, Jon S. Edwards, John M. Fegyveresi, Dave G. Ferris, Joan J. Fitzpatrick, T. J. Fudge, Chris J. Gibson, Vasileios Gkinis, Joshua J. Goetz, Stephanie Gregory, Geoffrey M. Hargreaves, Nels Iverson, Jay A. Johnson, Tyler R. Jones, Michael L. Kalk, Matthew J. Kippenhan, Bess G. Koffman, Karl Kreutz, Tanner W. Kuhl, Donald A. Lebar, James E. Lee, Shaun A. Marcott, Bradley R. Markle, Olivia J. Maselli, Joseph R. McConnell, Kenneth C. McGwire, Logan E. Mitchell, Nicolai B. Mortensen, Peter D. Neff, Kunihiko Nishiizumi, Richard M. Nunn, Anais J. Orsi, Daniel R. Pasteris, Joel B. Pedro, Erin C. Pettit, P. Buford Price, John C. Priscu, Rachael H. Rhodes, Julia L. Rosen, Andrew J. Schauer, Spruce W. Schoenemann, Paul J. Sendelbach, Jeffrey P. Severinghaus, Alexander J. Shturmakov, Michael Sigl, Kristina R. Slawny, Joseph M. Souney, Todd A. Sowers, Matthew K. Spencer, Eric J. Steig, Kendrick C. Taylor, Mark S. Twickler, Bruce H. Vaughn, Donald E. Voigt, Edwin D. Waddington, Kees C. Welten, Anthony W. Wendricks, James W. C. White, Mai Winstrup, Gifford J. Wong and Thomas E. Woodruff 
#
#--------------------
# Publication 
#	Authors: WAIS Divide Project Members
#	Published_Date_or_Year: 2015-04-30
#	Published_Title: Precise interpolar phasing of abrupt climate change during the last ice age 
#	Journal_Name: Nature
#	Volume: 520
#	Edition: 7459
#	Issue: 
#	Pages: 661-665
#	Report_Number: 
#	DOI: 10.1038/nature14401
#	Online_Resource: http://www.nature.com/nature/journal/v520/n7549/full/nature14401.html
#	Full_Citation: 
#	Abstract: The last glacial period exhibited abrupt Dansgaard-Oeschger climatic oscillations, evidence of which is preserved in a variety of Northern Hemisphere palaeoclimate archives. Ice cores show that Antarctica cooled during the warm phases of the Greenland Dansgaard-Oeschger cycle and vice versa, suggesting an interhemispheric redistribution of heat through a mechanism called the bipolar seesaw. Variations in the Atlantic meridional overturning circulation (AMOC) strength are thought to have been important, but much uncertainty remains regarding the dynamics and trigger of these abrupt events. Key information is contained in the relative phasing of hemispheric climate variations, yet the large, poorly constrained difference between gas age and ice age and the relatively low resolution of methane records from Antarctic ice cores have so far precluded methane-based synchronization at the required sub-centennial precision. Here we use a recently drilled high-accumulation Antarctic ice core to show that, on average, abrupt Greenland warming leads the corresponding Antarctic cooling onset by 218 +/- 92 years (2 sigma) for Dansgaard-Oeschger events, including the Bolling event; Greenland cooling leads the corresponding onset of Antarctic warming by 208 +/- 96 years. Our results demonstrate a north-to-south directionality of the abrupt climatic signal, which is propagated to the Southern Hemisphere high latitudes by oceanic rather than atmospheric processes. The similar interpolar phasing of warming and cooling transitions suggests that the transfer time of the climatic signal is independent of the AMOC background state. Our findings confirm a central role for ocean circulation in the bipolar seesaw and provide clear criteria for assessing hypotheses and model simulations of Dansgaard-Oeschger dynamics.
#
#------------------
# Publication 
#	Authors: Shaun A. Marcott, Thomas K. Bauska, Christo Buizert, Eric J. Steig, Julia L. Rosen, Kurt M. Cuffey, T.J. Fudge, Jeffery P. Severinghaus, Jinho Ahn, Michael L. Kalk, Joseph R. McConnell, Todd Sowers, Kendrick C. Taylor, James W.C. White and Edward J. Brook
#	Published_Date_or_Year: 2014-10-29
#	Published_Title: Centennial-scale changes in the global carbon cycle during the last deglaciation
#	Journal_Name: Nature
#	Volume: 514
#	Edition: 
#	Issue: 7524
#	Pages: 616-619
#	Report_Number: 
#	DOI: 10.1038/nature13799
#	Online_Resource: http://www.nature.com/nature/journal/v514/n7524/full/nature13799.html
#	Full_Citation: 
#	Abstract: Global climate and the concentration of atmospheric carbon dioxide (CO2) are correlated over recent glacial cycles. The combination of processes responsible for a rise in atmospheric CO2 at the last glacial termination (23,000 to 9,000 years ago), however, remains uncertain. Establishing the timing and rate of CO2 changes in the past provides critical insight into the mechanisms that influence the carbon cycle and helps put present and future anthropogenic emissions in context. Here we present CO2 and methane (CH4) records of the last deglaciation from a new high-accumulation West Antarctic ice core with unprecedented temporal resolution and precise chronology. We show that although low-frequency CO2 variations parallel changes in Antarctic temperature, abrupt CO2 changes occur that have a clear relationship with abrupt climate changes in the Northern Hemisphere. A significant proportion of the direct radiative forcing associated with the rise in atmospheric CO2 occurred in three sudden steps, each of 10 to 15 parts per million. Every step took place in less than two centuries and was followed by no notable change in atmospheric CO2 for about 1,000 to 1,500 years. Slow, millennial-scale ventilation of Southern Ocean CO2-rich, deep-ocean water masses is thought to have been fundamental to the rise in atmospheric CO2 associated with the glacial termination, given the strong covariance of CO2 levels and Antarctic temperatures. Our data establish a contribution from an abrupt, centennial-scale mode of CO2 variability that is not directly related to Antarctic temperature. We suggest that processes operating on centennial timescales, probably involving the Atlantic meridional overturning circulation, seem to be influencing global carbon-cycle dynamics and are at present not widely considered in Earth system models.
#------------------
# Publication 
#	Authors: C. Buizert, K. M. Cuffey, J. P. Severinghaus, D. Baggenstos, T. J. Fudge, E. J. Steig, B. R. Markle, M. Winstrup, R. H. Rhodes, E. J. Brook, T. A. Sowers, G. D. Clow, H. Cheng, R. L. Edwards, M. Sigl, J. R. McConnell, and K. C. Taylor
#	Published_Date_or_Year: 2015-02-05
#	Published_Title: The WAIS Divide deep ice core WD2014 chronology - Part 1: Methane synchronization (68-31 ka BP) and the gas age-ice age difference
#	Journal_Name: Climate of the Past
#	Volume: 11
#	Edition: 
#	Issue: 2
#	Pages: 153-173
#	Report_Number: 
#	DOI: 10.5194/cp-11-153-2015
#	Online_Resource: http://www.clim-past.net/11/153/2015/cp-11-153-2015.html
#	Full_Citation: 
#	Abstract: The West Antarctic Ice Sheet Divide (WAIS Divide, WD) ice core is a newly drilled, high-accumulation deep ice core that provides Antarctic climate records of the past ~68 ka at unprecedented temporal resolution. The upper 2850 m (back to 31.2 ka BP) have been dated using annual-layer counting. Here we present a chronology for the deep part of the core (67.8-31.2 ka BP), which is based on stratigraphic matching to annual-layer-counted Greenland ice cores using globally well-mixed atmospheric methane. We calculate the WD gas age-ice age difference (Delta age) using a combination of firn densification modeling, ice-flow modeling, and a data set of d15N-N2, a proxy for past firn column thickness. The largest Delta age at WD occurs during the Last Glacial Maximum, and is 525 +/- 120 years. Internally consistent solutions can be found only when assuming little to no influence of impurity content on densification rates, contrary to a recently proposed hypothesis. We synchronize the WD chronology to a linearly scaled version of the layer-counted Greenland Ice Core Chronology (GICC05), which brings the age of Dansgaard-Oeschger (DO) events into agreement with the U/Th absolutely dated Hulu Cave speleothem record. The small Delta age at WD provides valuable opportunities to investigate the timing of atmospheric greenhouse gas variations relative to Antarctic climate, as well as the interhemispheric phasing of the "bipolar seesaw".
#------------------
# 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.abstract
#	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: Logan E. Mitchell, Edward J. Brook, Todd Sowers, J.R. McConnell, Kendrick Taylor
#	Published_Date_or_Year: 2011-06-01
#	Published_Title: Multidecadal variability of atmospheric methane, 1000-1800 C.E.
#	Journal_Name: Journal of Geophysical Research - Biogeosciences
#	Volume: 116
#	Edition: 
#	Issue: G2
#	Pages: 
#	Report_Number: 
#	DOI: 10.1029/2010JG001441
#	Online_Resource: http://onlinelibrary.wiley.com/doi/10.1029/2010JG001441/full
#	Full_Citation: 
#	Abstract: We present a new high-precision, high-resolution record of atmospheric methane from the West Antarctic Ice Sheet (WAIS) Divide ice core covering 1000-1800 C.E., a time period known as the late preindustrial Holocene (LPIH). The results are consistent with previous measurements from the Law Dome ice core, the only other high-resolution record of methane for this time period, and confirm most of the observed variability. Multidecadal variability in methane concentrations throughout the LPIH is weakly correlated or uncorrelated with reconstructions of temperature and precipitation from a variety of geographic regions. Correlations with temperature are dominated by changes in Northern Hemisphere high latitude temperatures between 1400 and 1600 C.E. during the onset of the Little Ice Age. Times of war and plague when large population losses could have reduced anthropogenic emissions are coincident with short periods of decreasing global methane concentrations.
#------------------
# Funding_Agency 
#	Funding_Agency_Name:  US National Science Foundation
#	Grant:  0944078, 0841308, 1043528, 1142173, 1204172, 1142041, 1043518, 0839066, 0087345, 0944191, 0539232, 0537661, 1142069, 1142115, 0841135, 0839093, 1142166, 0440819, 1142164, 1142178, 0538657, 1043500, 0944584, 1043313, 0537930, 1043092, 0230149, 0230396, 0440817, 0440819, 0944191, 0944348, 0944266, 0839137, 0537593, 1043167
#------------------
# Site_Information 
#       Site_Name: WDC-06A
#       Location: Antarctica
#	Country: 
#	Northernmost_Latitude: -79.4676 
# 	Southernmost_Latitude: -79.4676
# 	Easternmost_Longitude: -112.0865
# 	Westernmost_Longitude: -112.0865
# 	Elevation: 1807 m  
#------------------
# Data_Collection   
#	Collection_Name: WAIS2015CH4OSUglacial
#	Earliest_Year: 26361
#	Most_Recent_Year: 11306
#	Time_Unit: Cal. Year BP
#	Core_Length: 3403 m
#	Notes: 
#------------------
# Chronology_Information
#	Chronology: WD2014 chronology, Buizert et al. 2015, Clim. Past 11:153. doi: 10.5194/cp-11-153-2015
# 	
#----------------	
# Variables 
#
# Data variables follow are preceded by "##" in columns one and two.
# Data line variables format:  Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) 
#
## depth_m	depth, , , m, , , , ,N
## age_calBP	age, , , calendar years before present, , , WD2014 Gas Age, ,N
## ch4_ppb	Methane concentration, trapped air, , ppb, , ice cores, NOAA04 scale, ,N 
## ch4_ppb_diff	Methane concentration Difference between replicate measurements at same depth, trapped air, , ppb, , ice cores, , ,N 
## Lab	Lab Code,,,,,, PSU or OSU (Pennsylvania State University or Oregon State University),,C		
#
#----------------
# Data:
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing Values: NaN 
# Methane concentrations from discrete samples of the WAIS Divide Ice Core measured at Oregon State University for the glacial interval 26 - 11 KYrBP
#
depth_m	age_calBP	ch4_ppb	ch4_ppb_diff	Lab
1955.301	11306.4	670.4	3.48	OSU
1957.309	11323.8	673.8	1.62	OSU
1959.313	11341.2	702.5	2.62	OSU
1961.315	11359.6	708.5	1.15	OSU
1963.44	11377.8	702.9	0.52	OSU
1965.313	11393.7	710.2	1.32	OSU
1967.317	11410.9	734.1	1.45	OSU
1969.316	11428.1	743.2	1.10	OSU
1971.54	11447.2	755.9	2.08	OSU
1975.32	11479.3	756.2	16.41	OSU
1977.322	11495.4	710.7	1.53	OSU
1979.32	11512	681.3	0.14	OSU
1981.322	11529.9	645.3	0.96	OSU
1983.428	11548.2	614.0	1.89	OSU
1985.322	11566.2	578.3	0.04	OSU
1987.323	11584.9	526.7	0.99	OSU
1989.325	11603	490.8	1.01	OSU
1991.327	11622	485.3	2.00	OSU
1995.33	11661.4	488.2	2.15	OSU
1997.331	11681.4	484.8	3.11	OSU
1999.55	11704.6	482.7	1.73	OSU
2001.334	11723.1	481.3	2.08	OSU
2003.43	11744.9	483.2	1.71	OSU
2005.331	11765.2	489.8	2.06	OSU
2007.33	11786.4	492.1	2.27	OSU
2009.331	11807.8	488.8	2.87	OSU
2011.332	11829.5	481.8	0.53	OSU
2015.316	11873.5	484.8	2.02	OSU
2017.336	11895.7	475.6	0.44	OSU
2019.335	11919.1	482.8	2.71	OSU
2021.335	11941.2	486.4	0.05	OSU
2023.438	11964	495.7	0.93	OSU
2025.338	11985.1	486.5	1.61	OSU
2027.339	12007.6	472.7	1.78	OSU
2029.335	12029.3	472.1	5.00	OSU
2031.334	12051.6	481.8	1.96	OSU
2035.334	12096.3	477.1	0.20	OSU
2037.334	12117.5	466.9	0.71	OSU
2039.336	12139.5	481.0	1.76	OSU
2041.291	12160.4	487.6	0.52	OSU
2043.435	12184.5	476.5	0.50	OSU
2045.337	12205.2	474.1	2.16	OSU
2047.337	12227.7	472.4	2.50	OSU
2049.336	12249.3	474.5	1.31	OSU
2051.334	12271.1	468.0	0.77	OSU
2055.335	12315	467.8	0.99	OSU
2057.336	12337.2	480.0	5.81	OSU
2059.331	12359.3	492.9	0.19	OSU
2061.329	12381.2	479.4	0.94	OSU
2063.33	12403.7	475.3	1.61	OSU
2065.328	12426.6	472.1	2.21	OSU
2067.326	12448	473.1	1.10	OSU
2069.327	12469.4	467.7	0.02	OSU
2071.329	12491.8	465.5	0.51	OSU
2075.331	12536.8	462.9	0.78	OSU
2077.447	12560.1	463.1	0.03	OSU
2079.333	12580.9	464.0	0.12	OSU
2081.334	12603.1	466.7	2.87	OSU
2083.434	12626.2	482.7	3.35	OSU
2085.333	12647.2	492.5	3.61	OSU
2087.348	12669.3	500.0	0.51	OSU
2089.331	12691.3	505.5	3.14	OSU
2091.332	12712.4	505.3	3.00	OSU
2095.331	12755.6	550.8	2.32	OSU
2097.332	12776.7	597.7	0.06	OSU
2099.332	12797.9	607.9	1.16	OSU
2101.333	12818.8	615.3	0.51	OSU
2103.333	12839.5	634.3	0.71	OSU
2105.332	12860.5	656.6	0.47	OSU
2107.333	12881.2	674.2	1.86	OSU
2109.332	12901.4	678.5	3.68	OSU
2111.334	12921.9	685.2	0.14	OSU
2115.333	12963.6	663.9	0.24	OSU
2117.332	12983.8	653.7	3.16	OSU
2119.331	13005.6	652.1	0.95	OSU
2121.331	13025.5	643.1	0.00	OSU
2123.455	13048.4	635.8	1.17	OSU
2125.334	13068.5	627.2	0.54	OSU
2127.335	13090.2	607.0	0.17	OSU
2129.335	13112.1	599.3	1.14	OSU
2131.335	13133.8	612.4	3.66	OSU
2135.333	13178.7	631.9	3.78	OSU
2137.334	13200.1	653.1	1.20	OSU
2139.33	13222.5	662.0	3.83	OSU
2141.331	13244	675.2	1.70	OSU
2143.431	13267.3	666.5	0.96	OSU
2145.63	13291.6	678.8	1.19	OSU
2147.463	13312.6	684.2	0.43	OSU
2149.397	13334.3	676.3	1.49	OSU
2151.328	13355.5	678.4	3.93	OSU
2155.328	13399.1	678.6	1.71	OSU
2157.326	13421.4	671.4	0.79	OSU
2159.344	13443.3	674.7	2.33	OSU
2161.324	13464.3	681.6	0.93	OSU
2163.427	13486.9	684.3	1.47	OSU
2165.326	13507.3	675.5	0.10	OSU
2167.326	13529.3	659.9	3.14	OSU
2169.327	13550.9	636.3	3.41	OSU
2171.327	13571.8	632.0	5.33	OSU
2175.323	13616	652.7	2.38	OSU
2177.326	13637.5	654.5	0.90	OSU
2179.325	13659.6	657.8	0.38	OSU
2181.325	13682.3	668.5	2.14	OSU
2183.422	13706	672.7	1.35	OSU
2185.323	13727.7	679.2	1.71	OSU
2187.32	13751.3	672.4	0.48	OSU
2189.322	13774.4	658.1	1.64	OSU
2191.321	13798.4	654.1	1.52	OSU
2195.413	13845.9	660.3	1.50	OSU
2197.322	13869.5	663.5	1.02	OSU
2198.32	13881.6	654.3	2.52	OSU
2199.321	13893.5	648.4	1.22	OSU
2200.321	13905.4	640.4	2.98	OSU
2201.32	13917.7	622.2	4.07	OSU
2202.321	13929.9	603.6	0.62	OSU
2204.322	13953.9	590.6	1.68	OSU
2205.32	13965.7	578.6	0.60	OSU
2206.321	13977.6	577.8	0.34	OSU
2207.32	13989.5	573.5	1.94	OSU
2208.318	14001.2	575.1	0.19	OSU
2209.321	14013.1	583.9	1.86	OSU
2210.32	14025	606.8	1.07	OSU
2211.321	14036.9	634.9	2.04	OSU
2212.32	14048.7	635.1	1.11	OSU
2214.32	14072.4	650.3	0.94	OSU
2215.377	14084.7	651.6	0.66	OSU
2216.322	14095.8	645.5	0.79	OSU
2217.32	14107.5	630.3	1.22	OSU
2218.318	14119.6	627.8	2.20	OSU
2219.319	14131.5	632.3	1.31	OSU
2220.319	14143	623.0	1.80	OSU
2221.319	14154.5	623.7	0.40	OSU
2222.318	14166.1	640.3	4.65	OSU
2224.321	14190.1	639.6	1.50	OSU
2225.245	14200.5	632.3	3.62	OSU
2226.272	14212	621.8	NaN	OSU
2227.321	14223.7	614.9	1.29	OSU
2228.403	14235.8	614.5	3.66	OSU
2229.322	14245.9	616.8	0.02	OSU
2230.322	14257.2	618.7	1.56	OSU
2231.321	14268.9	622.6	3.45	OSU
2232.321	14280.4	626.6	1.14	OSU
2234.318	14302	615.9	1.65	OSU
2235.319	14312.2	622.7	1.07	OSU
2236.318	14323.2	628.0	1.85	OSU
2237.319	14334	634.9	1.91	OSU
2238.297	14344	635.2	1.40	OSU
2239.32	14355	631.8	1.02	OSU
2240.32	14366.1	622.7	1.70	OSU
2241.32	14376.9	620.6	1.60	OSU
2242.321	14387.7	629.4	0.03	OSU
2244.321	14409.1	639.1	0.54	OSU
2245.319	14420.2	628.4	0.38	OSU
2246.321	14431.2	625.4	0.77	OSU
2247.321	14442.1	625.1	0.89	OSU
2248.374	14453.7	624.1	1.56	OSU
2249.302	14463.9	625.6	1.10	OSU
2250.323	14474.9	622.6	1.78	OSU
2251.323	14485.8	620.4	1.73	OSU
2252.323	14496.8	612.5	2.69	OSU
2254.822	14525	593.9	0.16	OSU
2255.324	14530.6	592.0	2.03	OSU
2256.323	14541.8	585.8	0.97	OSU
2257.273	14552.5	579.8	3.40	OSU
2258.254	14563.6	577.9	2.40	OSU
2259.32	14575.9	565.4	0.23	OSU
2260.32	14587.1	533.1	0.74	OSU
2261.319	14598.3	520.7	0.49	OSU
2262.321	14609.7	503.8	3.57	OSU
2264.866	14637.8	495.9	1.05	OSU
2265.323	14643.1	492.9	3.01	OSU
2266.323	14654.5	491.2	NaN	OSU
2267.323	14667.1	489.4	0.58	OSU
2268.323	14678.6	484.7	3.17	OSU
2269.3225	14689.3	487.8	1.89	OSU
2270.322	14701.2	484.6	3.46	OSU
2271.431	14714.8	484.5	0.68	OSU
2272.32	14724.9	484.4	1.13	OSU
2274.319	14748.2	489.5	1.22	OSU
2275.319	14760.7	489.4	2.51	OSU
2276.316	14772.7	487.8	0.94	OSU
2277.314	14784.3	488.0	1.75	OSU
2278.315	14796.2	489.8	0.29	OSU
2279.316	14808.2	485.6	1.28	OSU
2280.316	14820.4	487.6	0.12	OSU
2281.424	14833.5	487.8	1.13	OSU
2282.313	14843.9	480.6	1.02	OSU
2284.312	14867.5	472.4	0.45	OSU
2285.313	14879.5	475.6	0.74	OSU
2286.312	14891.8	473.7	0.09	OSU
2287.311	14904.2	476.2	1.04	OSU
2288.311	14916.4	479.7	0.44	OSU
2289.312	14928.6	487.4	1.23	OSU
2290.31	14940.7	487.1	1.66	OSU
2291.41	14954.5	480.3	1.71	OSU
2292.31	14965.6	478.6	0.84	OSU
2294.358	14990	475.3	0.86	OSU
2295.308	15001.5	472.1	1.46	OSU
2296.308	15013.6	471.3	3.80	OSU
2297.307	15025.6	467.8	1.42	OSU
2298.31	15037.7	471.9	0.74	OSU
2299.308	15049.5	463.6	0.79	OSU
2300.307	15061.4	461.8	0.14	OSU
2301.366	15075	458.4	3.43	OSU
2302.308	15086.1	461.9	0.64	OSU
2304.419	15111	467.2	0.19	OSU
2305.308	15122.2	472.3	2.88	OSU
2306.309	15135.1	474.8	1.40	OSU
2307.306	15146.6	473.7	2.03	OSU
2308.306	15158.2	474.1	2.07	OSU
2309.306	15170.2	464.5	1.68	OSU
2310.305	15183	466.4	0.23	OSU
2311.32	15195.8	467.0	3.81	OSU
2312.307	15208	469.9	3.20	OSU
2314.305	15232.8	475.6	1.62	OSU
2315.306	15245.2	476.0	1.03	OSU
2316.306	15257.4	476.1	1.40	OSU
2317.307	15270.3	474.6	4.32	OSU
2318.306	15283.6	476.0	3.65	OSU
2319.308	15297.1	473.1	2.97	OSU
2320.307	15309.4	476.2	0.12	OSU
2321.308	15322.4	472.8	0.87	OSU
2322.308	15336	471.6	2.17	OSU
2324.31	15363.1	477.0	0.99	OSU
2325.51	15379.3	477.2	NaN	OSU
2326.309	15390.1	478.4	2.48	OSU
2327.311	15403.8	476.6	0.87	OSU
2328.311	15418	470.8	1.56	OSU
2329.311	15432	478.3	5.98	OSU
2330.31	15445.9	469.2	2.17	OSU
2331.312	15460	467.9	0.36	OSU
2332.313	15474.3	465.8	3.49	OSU
2334.31	15502.8	459.3	0.82	OSU
2335.311	15517	459.1	0.01	OSU
2336.317	15532	460.7	NaN	OSU
2337.257	15545.5	459.9	0.13	OSU
2338.314	15561.1	457.2	0.29	OSU
2339.314	15576.1	454.4	1.32	OSU
2340.315	15590.5	453.0	0.81	OSU
2341.317	15605.3	454.8	0.30	OSU
2342.315	15620.3	453.3	0.92	OSU
2344.311	15650	452.4	0.59	OSU
2345.313	15665.9	450.2	0.35	OSU
2346.311	15681.3	449.8	2.64	OSU
2347.32	15696	450.8	0.54	OSU
2348.309	15711.7	458.6	0.66	OSU
2349.31	15726.8	459.5	0.77	OSU
2350.308	15741.9	460.0	1.99	OSU
2351.31	15757.1	459.7	1.97	OSU
2352.309	15772.6	459.6	3.97	OSU
2354.305	15803.4	458.7	0.36	OSU
2355.308	15819.3	454.6	2.01	OSU
2356.307	15835	454.0	2.68	OSU
2358.077	15861.9	450.1	0.07	OSU
2358.31	15865.7	450.3	1.08	OSU
2359.31	15880.8	451.3	2.57	OSU
2360.311	15896.2	448.2	0.69	OSU
2361.312	15912.3	452.3	1.73	OSU
2362.312	15928.9	449.4	0.43	OSU
2364.311	15961.9	453.9	1.67	OSU
2365.311	15979.7	463.8	0.05	OSU
2366.31	15997.5	463.2	1.71	OSU
2367.313	16014.7	465.6	1.07	OSU
2368.313	16033	468.0	4.14	OSU
2369.312	16050.8	475.1	1.35	OSU
2370.503	16071.6	482.3	2.97	OSU
2371.314	16085.9	483.5	2.83	OSU
2372.315	16104.4	484.1	0.53	OSU
2374.318	16141.7	448.9	1.15	OSU
2375.319	16160.1	443.1	0.90	OSU
2376.32	16178.9	443.0	0.63	OSU
2377.32	16198.9	444.2	2.57	OSU
2378.321	16219	442.9	1.19	OSU
2379.321	16238.8	447.8	0.93	OSU
2380.312	16257.2	450.6	1.75	OSU
2381.322	16276.3	450.1	1.69	OSU
2382.323	16295.9	451.9	0.47	OSU
2384.325	16334.2	448.8	1.65	OSU
2385.326	16354.4	440.5	3.45	OSU
2386.325	16374	439.3	0.35	OSU
2387.324	16392.6	433.2	2.65	OSU
2388.325	16413.6	435.5	0.30	OSU
2389.325	16433	433.5	1.31	OSU
2390.282	16452.5	432.3	2.77	OSU
2391.325	16473.3	432.9	0.36	OSU
2392.328	16492.4	432.1	2.94	OSU
2394.329	16533.6	433.8	0.92	OSU
2395.328	16553.6	438.6	3.41	OSU
2396.34	16575.2	439.0	7.34	OSU
2397.33	16595.1	437.8	0.61	OSU
2398.331	16615	435.0	1.00	OSU
2399.331	16636.4	434.5	1.31	OSU
2400.281	16655.9	439.5	NaN	OSU
2401.333	16678.2	436.2	NaN	OSU
2402.332	16701.3	429.7	NaN	OSU
2404.232	16743.2	422.9	NaN	OSU
2405.283	16766.5	423.9	NaN	OSU
2406.331	16790.8	426.8	NaN	OSU
2407.336	16812.8	426.4	NaN	OSU
2408.332	16835	428.5	7.07	OSU
2409.233	16856.4	436.2	NaN	OSU
2410.285	16880.7	427.8	1.00	OSU
2411.335	16905.6	427.9	NaN	OSU
2412.285	16927.2	424.9	NaN	OSU
2414.338	16976.4	424.3	NaN	OSU
2415.336	17001	424.5	NaN	OSU
2416.337	17026	420.7	NaN	OSU
2417.336	17051.3	416.3	NaN	OSU
2418.337	17075.5	422.3	0.79	OSU
2419.337	17101	423.5	NaN	OSU
2420.338	17124.6	417.3	NaN	OSU
2421.339	17150.4	407.5	NaN	OSU
2422.338	17174.3	406.4	NaN	OSU
2424.336	17224.5	408.9	NaN	OSU
2425.336	17249.7	411.8	NaN	OSU
2426.336	17273.9	413.5	NaN	OSU
2427.337	17299.4	412.0	NaN	OSU
2428.336	17325.6	409.2	1.38	OSU
2429.336	17349.3	410.1	NaN	OSU
2430.337	17375.3	405.8	NaN	OSU
2431.337	17401.3	403.4	NaN	OSU
2432.337	17425.7	402.6	NaN	OSU
2434.338	17480.1	402.4	NaN	OSU
2435.338	17505.1	402.3	NaN	OSU
2436.42	17534.5	394.6	NaN	OSU
2437.34	17559.7	393.9	NaN	OSU
2438.339	17586.1	391.1	4.32	OSU
2439.389	17613.5	393.6	NaN	OSU
2440.341	17638.8	386.1	NaN	OSU
2441.34	17665.9	389.7	NaN	OSU
2442.341	17695.6	380.4	NaN	OSU
2444.344	17750	384.0	NaN	OSU
2445.341	17778.5	384.0	NaN	OSU
2446.344	17805.2	385.9	NaN	OSU
2447.343	17835.7	383.7	NaN	OSU
2448.344	17863.1	381.8	1.41	OSU
2449.444	17897.6	383.4	NaN	OSU
2450.345	17924.2	385.4	1.71	OSU
2451.342	17954.1	383.9	NaN	OSU
2452.342	17984.2	383.7	NaN	OSU
2454.347	18048.8	385.5	NaN	OSU
2455.347	18080.1	377.7	NaN	OSU
2456.347	18110.3	378.6	NaN	OSU
2457.348	18142.6	376.0	NaN	OSU
2458.347	18174.3	376.0	1.00	OSU
2459.281	18203.6	375.8	NaN	OSU
2460.35	18237.9	373.8	NaN	OSU
2461.349	18270.7	373.7	NaN	OSU
2462.347	18302.7	378.1	NaN	OSU
2464.346	18367.7	376.5	NaN	OSU
2465.344	18400.2	376.5	NaN	OSU
2466.348	18433.8	377.3	NaN	OSU
2467.348	18464.6	378.5	NaN	OSU
2468.247	18493.9	384.3	2.09	OSU
2469.276	18526.5	381.8	NaN	OSU
2470.35	18562.2	376.9	NaN	OSU
2471.399	18594.1	374.5	NaN	OSU
2472.524	18629.6	379.8	NaN	OSU
2474.351	18687.6	377.4	NaN	OSU
2475.351	18718.8	373.3	NaN	OSU
2476.352	18750	374.4	NaN	OSU
2477.351	18783.9	375.3	NaN	OSU
2478.352	18814.5	376.9	2.17	OSU
2479.301	18846	378.7	NaN	OSU
2480.352	18880.4	379.2	NaN	OSU
2481.349	18912.3	378.1	NaN	OSU
2482.343	18943	376.9	NaN	OSU
2484.351	19009.1	373.0	NaN	OSU
2485.35	19040.6	372.8	NaN	OSU
2486.348	19074.7	375.1	NaN	OSU
2487.3	19104.1	375.2	2.11	OSU
2488.341	19137.9	382.9	NaN	OSU
2489.349	19172	387.5	NaN	OSU
2490.35	19204.4	377.9	NaN	OSU
2491.299	19234.6	379.2	NaN	OSU
2492.354	19269.7	386.8	NaN	OSU
2494.349	19334.3	382.5	NaN	OSU
2495.517	19372.1	385.9	NaN	OSU
2496.348	19399.1	386.4	NaN	OSU
2497.349	19430.3	376.1	NaN	OSU
2498.349	19460.3	373.8	2.13	OSU
2499.349	19492.3	372.7	NaN	OSU
2500.351	19526.9	373.8	NaN	OSU
2501.3	19556.2	372.2	NaN	OSU
2502.351	19588.9	371.7	NaN	OSU
2504.351	19653.6	374.8	NaN	OSU
2505.351	19686.8	375.6	NaN	OSU
2506.352	19718.8	374.5	NaN	OSU
2507.353	19750.1	372.0	NaN	OSU
2508.252	19780.3	370.8	1.56	OSU
2509.304	19814.9	370.6	NaN	OSU
2510.355	19849.8	369.2	NaN	OSU
2511.355	19883.8	367.7	NaN	OSU
2512.355	19918.2	371.4	NaN	OSU
2514.357	19983.2	375.1	NaN	OSU
2515.504	20019.2	371.4	NaN	OSU
2516.358	20048.4	374.4	NaN	OSU
2517.358	20081.6	372.3	NaN	OSU
2518.358	20113.6	365.8	1.14	OSU
2519.36	20147.6	367.1	NaN	OSU
2520.359	20180.5	377.1	NaN	OSU
2521.361	20213.4	379.2	NaN	OSU
2522.363	20243.4	374.2	NaN	OSU
2524.363	20306.2	370.7	NaN	OSU
2525.418	20339.2	373.2	NaN	OSU
2526.365	20369.9	374.5	NaN	OSU
2527.367	20401.6	374.2	NaN	OSU
2528.415	20433.5	371.3	1.75	OSU
2529.367	20464	368.8	NaN	OSU
2530.368	20495.3	367.2	NaN	OSU
2531.368	20525	362.4	NaN	OSU
2532.319	20556.7	363.1	NaN	OSU
2534.369	20622.1	371.9	NaN	OSU
2535.412	20655.9	369.7	NaN	OSU
2536.371	20688.1	369.7	NaN	OSU
2537.421	20721.3	373.0	NaN	OSU
2538.663	20764	371.8	3.60	OSU
2539.37	20787.3	372.6	NaN	OSU
2540.373	20821.5	374.9	NaN	OSU
2541.373	20855.5	374.2	NaN	OSU
2542.373	20888.6	373.0	NaN	OSU
2544.375	20957.6	376.8	NaN	OSU
2545.375	20992.5	381.2	NaN	OSU
2546.376	21027.4	381.1	NaN	OSU
2547.376	21061.4	373.3	NaN	OSU
2548.432	21096.3	372.3	0.09	OSU
2549.377	21130.1	370.9	NaN	OSU
2550.377	21163.1	373.5	NaN	OSU
2551.377	21198.9	373.8	NaN	OSU
2552.377	21232.7	376.4	NaN	OSU
2554.376	21302.5	372.1	NaN	OSU
2555.377	21337.5	363.6	NaN	OSU
2557.377	21407.6	363.5	NaN	OSU
2558.373	21443.3	361.6	1.83	OSU
2559.378	21477.5	364.8	NaN	OSU
2560.377	21512.9	369.8	NaN	OSU
2561.377	21549.4	363.1	NaN	OSU
2562.379	21583.2	364.4	NaN	OSU
2563.478	21621.6	368.4	NaN	OSU
2564.946	21673.4	361.6	NaN	OSU
2565.382	21688.7	363.3	NaN	OSU
2566.382	21724.3	363.9	NaN	OSU
2567.374	21761.1	364.9	NaN	OSU
2568.336	21796	363.3	0.59	OSU
2569.485	21836.6	361.1	NaN	OSU
2570.479	21871.5	358.9	NaN	OSU
2571.384	21905.1	363.3	NaN	OSU
2572.386	21939	363.2	NaN	OSU
2574.383	22009	365.0	NaN	OSU
2575.383	22041.9	361.0	NaN	OSU
2576.384	22078.4	362.3	NaN	OSU
2577.386	22112	361.4	NaN	OSU
2578.335	22144	359.9	1.32	OSU
2579.386	22181.7	369.4	NaN	OSU
2580.386	22215.5	374.2	NaN	OSU
2581.387	22249.1	366.6	NaN	OSU
2582.387	22284.2	370.7	NaN	OSU
2584.387	22351.5	374.7	NaN	OSU
2585.386	22387	369.4	NaN	OSU
2586.389	22421.4	371.9	NaN	OSU
2587.438	22457.4	379.7	NaN	OSU
2588.339	22488.8	376.5	1.65	OSU
2589.39	22523.3	383.2	NaN	OSU
2590.391	22557.7	380.1	NaN	OSU
2591.392	22594.3	375.3	NaN	OSU
2592.392	22629.4	373.7	NaN	OSU
2595.053	22721.6	387.3	NaN	OSU
2595.393	22733.2	381.7	NaN	OSU
2596.393	22767.9	390.5	NaN	OSU
2597.394	22802.4	387.6	NaN	OSU
2598.345	22838.6	380.3	3.10	OSU
2600.355	22911.4	388.2	NaN	OSU
2602.356	22982	387.2	NaN	OSU
2604.3	23049.8	389.7	NaN	OSU
2606.677	23136	391.1	NaN	OSU
2608.358	23193.7	397.3	NaN	OSU
2610.36	23265.2	407.0	NaN	OSU
2612.363	23336.3	389.6	NaN	OSU
2615.074	23432.9	392.9	NaN	OSU
2616.365	23477.7	383.6	NaN	OSU
2618.366	23545.7	398.3	NaN	OSU
2620.366	23609.6	399.1	NaN	OSU
2622.578	23682.2	394.8	NaN	OSU
2624.368	23739.5	399.2	NaN	OSU
2626.369	23802.1	403.6	NaN	OSU
2628.557	23871.7	399.4	NaN	OSU
2630.371	23928.4	396.3	NaN	OSU
2632.371	23995	377.0	NaN	OSU
2634.632	24067.4	362.0	NaN	OSU
2636.374	24122.9	360.4	NaN	OSU
2638.376	24188.6	362.8	NaN	OSU
2640.587	24259.7	363.6	NaN	OSU
2642.377	24316.9	366.2	NaN	OSU
2644.378	24378.7	370.0	NaN	OSU
2646.589	24449.7	376.3	NaN	OSU
2648.38	24507.3	372.0	NaN	OSU
2650.382	24569.2	374.4	NaN	OSU
2652.5855	24636.9	371.1	1.61	OSU
2654.391	24689.3	372.8	2.78	OSU
2658.602	24818.5	381.3	1.61	OSU
2660.403	24871	380.1	1.93	OSU
2666.383	25049.5	367.7	0.45	OSU
2668.395	25111.5	367.8	NaN	OSU
2674.395	25294.5	379.7	0.25	OSU
2676.62	25362.5	368.0	0.79	OSU
2682.626	25548.1	366.8	1.21	OSU
2686.404	25670.9	370.8	0.86	OSU
2690.427	25801.1	365.7	2.40	OSU
2692.413	25864.7	364.8	NaN	OSU
2695.1175	25951.8	366.7	1.23	OSU
2696.423	25994.4	366.5	0.01	OSU
2698.415	26057	364.1	1.05	OSU
2700.515	26121.1	369.2	0.01	OSU
2702.437	26181.4	372.7	0.48	OSU
2704.4355	26242.4	364.2	1.63	OSU
2706.631	26308.5	364.4	1.03	OSU
2708.425	26361.8	360.0	NaN	OSU