Chronology file name : AR021.CRN Measurement file name : AR021.RWL Date checked : 01JUL96 Technician's name : MARIETTE SEKLECKI Supervisor's name : HENRI D. GRISSINO-MAYER Beginning year : 1764 Ending year : 1980 Principal investigators: D.S. STAHLE Site name : SUGARBERRRY NATURAL AREA Site location : ARKANSAS, USA Species information : QULY OVERCUP OAK Latitude : 3405N Longitude : 9104W Elevation : 45 M Series intercorrelation: 0.742 Avg mean sensitivity : 0.339 Avg standard deviation : 1.031 Avg autocorrelation : 0.622 Number dated series : 20 Segment length tested : 50 Number problem segments: 0 Pct problem segments : 0.00 Are there obvious misdated series? NO Number possible misdated series : N/A Percent misdated series : 0.00 Do they affect chronology quality? N/A Recommend withhold from ITRDB? N/A Comments: EXCELLENT HIGH QUALITY DATA SET PART 5: CORRELATION OF SERIES BY SEGMENTS: 23:31 Mon 01 JUL 1996 Page 5 ----------------------------------------------------------------------------------------------------------------------------------- Correlations of 50-year dated segments, lagged 25 years Flags: A = correlation under 0.3281 but highest as dated; B = correlation higher at other than dated position Seq Series Time_span 1775 1800 1825 1850 1875 1900 1925 1950 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 SNA01A 1862 1980 .79 .65 .65 .68 .67 2 SNA02A 1837 1980 .83 .83 .74 .69 .71 .74 3 SNA03A 1838 1980 .78 .81 .65 .66 .75 .71 4 SNA04A 1867 1980 .88 .75 .78 .85 .78 5 SNA06A 1841 1980 .89 .87 .88 .81 .78 .77 6 SNA06B 1778 1980 .67 .69 .80 .81 .83 .85 .82 .81 7 SNA07A 1764 1980 .59 .59 .80 .90 .82 .77 .76 .74 8 SNA07B 1817 1980 .86 .84 .88 .87 .74 .73 .76 9 SNA08B 1850 1980 .75 .64 .77 .75 .70 10 SNA09A 1890 1980 .85 .81 .85 .84 11 SNA09B 1868 1980 .80 .75 .71 .83 .81 12 SNA10A 1821 1980 .82 .85 .75 .68 .79 .75 .67 13 SNA10B 1822 1980 .74 .76 .77 .63 .80 .76 .69 14 SNA11A 1785 1980 .71 .75 .85 .90 .79 .64 .70 .62 15 SNA11B 1797 1980 .66 .69 .78 .82 .76 .67 .70 .75 16 SNA14A 1777 1980 .63 .64 .72 .72 .68 .75 .78 .76 17 SNA14B 1850 1980 .76 .71 .69 .75 .73 18 SNA15A 1880 1980 .70 .71 .82 .78 19 SNA15B 1886 1980 .81 .79 .83 .78 20 SNA17A 1775 1980 .58 .59 .68 .69 .76 .74 .77 .75 PART 7: DESCRIPTIVE STATISTICS: 23:31 Mon 01 JUL 1996 Page 6 ----------------------------------------------------------------------------------------------------------------------------------- Corr //-------- Unfiltered --------\\ //---- Filtered -----\\ No. No. No. with Mean Max Std Auto Mean Max Std Auto AR Seq Series Interval Years Segmt Flags Master msmt msmt dev corr sens value dev corr () --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- 1 SNA01A 1862 1980 119 5 0 0.689 1.91 5.52 0.970 0.623 0.298 1.96 0.322 0.045 1 2 SNA02A 1837 1980 144 6 0 0.738 2.11 5.53 1.151 0.567 0.364 2.10 0.370 0.020 1 3 SNA03A 1838 1980 143 6 0 0.696 1.76 3.92 0.583 0.345 0.282 2.14 0.385 0.023 1 4 SNA04A 1867 1980 114 5 0 0.789 2.72 6.53 1.213 0.477 0.358 2.09 0.384 -0.020 1 5 SNA06A 1841 1980 140 6 0 0.822 1.95 7.82 1.122 0.647 0.351 2.25 0.433 0.013 1 6 SNA06B 1778 1980 203 8 0 0.766 1.66 6.48 0.940 0.656 0.348 2.32 0.439 -0.027 1 7 SNA07A 1764 1980 217 8 0 0.737 1.54 4.46 0.868 0.699 0.344 2.22 0.346 0.014 1 8 SNA07B 1817 1980 164 7 0 0.808 1.99 4.44 0.883 0.608 0.298 2.21 0.430 0.059 1 9 SNA08B 1850 1980 131 5 0 0.720 1.98 4.16 0.807 0.500 0.306 2.10 0.384 -0.045 2 10 SNA09A 1890 1980 91 4 0 0.816 3.30 7.39 1.448 0.541 0.315 2.09 0.464 -0.055 1 11 SNA09B 1868 1980 113 5 0 0.797 3.00 6.73 1.436 0.543 0.351 2.07 0.444 0.050 1 12 SNA10A 1821 1980 160 7 0 0.739 1.57 7.14 0.961 0.596 0.362 2.40 0.433 -0.009 1 13 SNA10B 1822 1980 159 7 0 0.703 1.76 6.52 1.103 0.645 0.386 2.14 0.424 0.002 1 14 SNA11A 1785 1980 196 8 0 0.742 1.58 4.80 0.853 0.667 0.330 2.13 0.381 0.003 1 15 SNA11B 1797 1980 184 8 0 0.723 1.94 6.46 1.080 0.708 0.313 2.14 0.410 -0.052 2 16 SNA14A 1777 1980 204 8 0 0.698 1.96 4.90 1.009 0.706 0.318 2.08 0.362 -0.001 1 17 SNA14B 1850 1980 131 5 0 0.743 2.33 5.68 1.084 0.518 0.342 2.24 0.432 0.002 1 18 SNA15A 1880 1980 101 4 0 0.739 1.68 5.21 1.103 0.719 0.331 2.05 0.393 -0.011 1 19 SNA15B 1886 1980 95 4 0 0.785 1.77 4.30 1.003 0.710 0.319 2.17 0.480 0.002 1 20 SNA17A 1775 1980 206 8 0 0.678 1.76 6.67 1.339 0.743 0.422 2.13 0.330 -0.009 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 3015 124 0 0.742 1.95 7.82 1.031 0.622 0.339 2.40 0.398 0.000