Chronology file name : TX003.CRN Measurement file name : TX003.RWL Date checked : 18NOV96 Technician's name : MARIETTE SEKLECKI Supervisor's name : HENRI D. GRISSINO-MAYER Beginning year : 1694 Ending year : 1982 Principal investigators: D.W. STAHLE Site name : PECAN BAYOU Site location : TEXAS, USA Species information : QUST POST OAK Latitude : 3344N Longitude : 9505W Elevation : 130 M Series intercorrelation: 0.681 Avg mean sensitivity : 0.218 Avg standard deviation : 0.335 Avg autocorrelation : 0.660 Number dated series : 33 Segment length tested : 50 Number problem segments: 7 Pct problem segments : 2.35 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: FEW OUTER RING SEGMENTS HAVE LOW CORRELATIONS EXCELLENT HIGH QUALITY CHRONOLOGY PART 5: CORRELATION OF SERIES BY SEGMENTS: 19:52 Mon 18 NOV 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 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 PEC12A 1860 1982 .77 .71 .65 .53 .40 2 PEC12B 1706 1982 .62 .76 .76 .65 .66 .77 .82 .79 .74 .69 .64 3 PEC14A 1718 1982 .60 .65 .82 .85 .81 .74 .79 .80 .64 .31A .20B 4 PEC14B 1745 1982 .64 .71 .76 .71 .68 .74 .72 .47 .29B .25A 5 PEC15A 1765 1982 .79 .76 .46 .60 .89 .81 .71 .68 .62 6 PEC15B 1726 1982 .62 .76 .78 .66 .73 .87 .70 .61 .67 .59 7 PEC16A 1745 1982 .81 .83 .81 .79 .83 .85 .73 .53 .37 .39 8 PEC16B 1815 1982 .76 .76 .81 .82 .77 .73 .73 9 PEC18A 1760 1982 .68 .80 .76 .62 .66 .75 .74 .75 .78 10 PEC18B 1771 1982 .74 .72 .71 .79 .80 .82 .78 .78 .81 11 PEC19A 1795 1982 .73 .74 .79 .79 .76 .82 .66 .57 12 PEC19B 1788 1982 .79 .69 .79 .86 .78 .72 .73 .75 13 PEC20A 1729 1982 .43 .67 .85 .83 .72 .73 .71 .52 .43 .52 14 PEC20B 1745 1982 .66 .67 .85 .74 .70 .74 .65 .50 .46 .54 15 PEC21A 1748 1982 .67 .67 .70 .63 .71 .87 .74 .72 .72 .66 16 PEC21B 1760 1982 .61 .65 .50 .68 .83 .80 .79 .65 .60 17 PEC24A 1742 1982 .55 .59 .76 .62 .65 .75 .68 .56 .40 .38 18 PEC24B 1831 1982 .48 .64 .77 .71 .64 .62 19 PEC26A 1770 1982 .78 .78 .72 .75 .82 .75 .73 .66 .36 20 PEC26B 1744 1980 .69 .74 .74 .71 .73 .73 .76 .80 .69 .49 21 PEC36A 1816 1982 .66 .64 .70 .71 .77 .79 .76 22 PEC36B 1698 1771 .65 .62 .59 23 PEC36C 1702 1982 .74 .74 .65 .57 .55 .37 .50 .59 .67 .76 .74 24 PEC37A 1743 1982 .62 .69 .85 .86 .83 .83 .78 .73 .75 .73 25 PEC37B 1748 1982 .72 .72 .80 .83 .84 .87 .83 .71 .67 .57 26 PEC38A 1720 1787 .50 .57 .59 27 PEC38B 1722 1982 .65 .66 .70 .75 .67 .77 .86 .81 .74 .50 .26A 28 PEC38C 1750 1982 .79 .80 .66 .80 .84 .71 .73 .66 .60 29 PEC40A 1694 1982 .55 .50 .69 .76 .70 .59 .65 .79 .74 .73 .71 .69 30 PEC40B 1726 1982 .76 .82 .74 .69 .47B .54 .77 .74 .74 .70 31 PEC52A 1711 1982 .77 .79 .72 .54 .45 .53 .76 .81 .59 .35 .28A 32 PEC53A 1702 1982 .59 .64 .71 .67 .71 .74 .72 .64 .72 .71 .63 33 PEC53B 1750 1982 .74 .57 .61 .78 .77 .73 .70 .70 .67 PART 7: DESCRIPTIVE STATISTICS: 19:52 Mon 18 NOV 1996 Page 7 ----------------------------------------------------------------------------------------------------------------------------------- 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 PEC12A 1860 1982 123 5 0 0.601 1.18 1.99 0.243 0.640 0.138 2.07 0.427 -0.049 2 2 PEC12B 1706 1982 277 11 0 0.709 1.05 2.12 0.349 0.656 0.205 2.01 0.324 -0.025 1 3 PEC14A 1718 1982 265 11 2 0.633 0.92 2.43 0.481 0.764 0.253 1.98 0.298 -0.010 2 4 PEC14B 1745 1982 238 10 2 0.589 0.78 2.09 0.359 0.736 0.228 2.06 0.291 -0.025 1 5 PEC15A 1765 1982 218 9 0 0.713 0.95 1.91 0.297 0.622 0.210 1.99 0.360 -0.026 1 6 PEC15B 1726 1982 257 10 0 0.697 0.80 2.54 0.377 0.755 0.248 2.14 0.370 -0.022 1 7 PEC16A 1745 1982 238 10 0 0.682 1.21 2.98 0.517 0.791 0.186 1.82 0.245 0.000 1 8 PEC16B 1815 1982 168 7 0 0.752 1.23 2.85 0.299 0.461 0.180 1.91 0.310 -0.035 1 9 PEC18A 1760 1982 223 9 0 0.711 0.94 2.11 0.307 0.477 0.252 2.14 0.342 0.026 1 10 PEC18B 1771 1982 212 9 0 0.777 0.76 1.67 0.235 0.537 0.230 1.99 0.303 -0.034 2 11 PEC19A 1795 1982 188 8 0 0.726 0.95 2.39 0.378 0.753 0.202 2.05 0.369 -0.005 1 12 PEC19B 1788 1982 195 8 0 0.769 0.88 1.95 0.287 0.684 0.197 2.00 0.317 -0.001 2 13 PEC20A 1729 1982 254 10 0 0.631 0.72 2.57 0.345 0.754 0.200 1.96 0.352 -0.009 1 14 PEC20B 1745 1982 238 10 0 0.645 0.72 1.73 0.279 0.751 0.203 2.05 0.391 -0.048 1 15 PEC21A 1748 1982 235 10 0 0.707 1.04 2.63 0.413 0.740 0.205 2.16 0.423 -0.002 1 16 PEC21B 1760 1982 223 9 0 0.675 1.06 1.94 0.312 0.573 0.212 2.05 0.324 -0.011 1 17 PEC24A 1742 1982 241 10 0 0.582 0.64 2.14 0.308 0.639 0.252 2.17 0.389 -0.024 1 18 PEC24B 1831 1982 152 6 0 0.610 0.73 1.66 0.232 0.495 0.231 2.34 0.451 -0.011 1 19 PEC26A 1770 1982 213 9 0 0.682 0.80 1.82 0.294 0.698 0.212 2.11 0.409 -0.034 3 20 PEC26B 1744 1980 237 10 0 0.690 0.91 3.10 0.433 0.636 0.259 1.98 0.365 -0.010 1 21 PEC36A 1816 1982 167 7 0 0.709 0.85 2.79 0.521 0.841 0.231 2.07 0.316 -0.018 1 22 PEC36B 1698 1771 74 3 0 0.680 0.88 1.92 0.376 0.520 0.290 2.13 0.417 0.077 1 23 PEC36C 1702 1982 281 11 0 0.617 0.70 1.95 0.316 0.719 0.247 2.10 0.329 -0.001 1 24 PEC37A 1743 1982 240 10 0 0.759 1.14 2.40 0.364 0.581 0.223 1.93 0.318 -0.016 1 25 PEC37B 1748 1982 235 10 0 0.760 1.07 2.28 0.373 0.705 0.204 2.14 0.394 -0.021 1 26 PEC38A 1720 1787 68 3 0 0.587 0.87 1.71 0.314 0.359 0.313 1.95 0.382 -0.046 3 27 PEC38B 1722 1982 261 11 1 0.682 0.84 2.46 0.294 0.558 0.233 2.03 0.267 0.008 1 28 PEC38C 1750 1982 233 9 0 0.734 0.87 1.83 0.289 0.596 0.218 1.91 0.340 -0.011 1 29 PEC40A 1694 1982 289 12 0 0.671 0.66 1.52 0.245 0.712 0.220 2.06 0.332 -0.013 1 30 PEC40B 1726 1982 257 10 1 0.687 0.63 1.18 0.194 0.623 0.207 2.01 0.303 -0.013 1 31 PEC52A 1711 1982 272 11 1 0.599 0.97 2.77 0.393 0.705 0.205 2.04 0.317 -0.020 1 32 PEC53A 1702 1982 281 11 0 0.676 0.97 2.05 0.318 0.725 0.183 2.01 0.362 -0.020 3 33 PEC53B 1750 1982 233 9 0 0.706 0.95 2.64 0.292 0.536 0.197 2.05 0.323 0.001 2 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 7286 298 7 0.681 0.89 3.10 0.335 0.660 0.218 2.34 0.342 -0.014