Chronology file name : VA022.CRN Measurement file name : VA022.RWL Date checked : 02SEP96 Technician's name : MARIETTE SEKLECKI Supervisor's name : HENRI D. GRISSINO-MAYER Beginning year : 1662 Ending year : 1984 Principal investigators: D.W. STAHLE, M.K. CLEAVELAND Site name : CHICKAHOMINY RIVER Site location : VIRGINIA, USA Species information : TADI BALDCYPRESS Latitude : 3723N Longitude : 7656W Elevation : 8 M Series intercorrelation: 0.558 Avg mean sensitivity : 0.505 Avg standard deviation : 0.697 Avg autocorrelation : 0.475 Number dated series : 22 Segment length tested : 50 Number problem segments: 11 Pct problem segments : 7.28 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: #3 CHI03A 1849-1899, #8 CHI06B 1788-1874 HAVE LOW CORRELATIONS ALL FLAGS = LOW CORRELATIONS WITH MASTER SOME INNER RING SEGMENTS HAVE LOW CORRELATIONS EXCELLENT DATA SET PART 5: CORRELATION OF SERIES BY SEGMENTS: 16:02 Mon 02 SEP 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 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 CHI01B 1809 1984 .51 .56 .74 .66 .68 .78 .74 2 CHI02B 1704 1984 .60 .74 .77 .71 .59 .61 .71 .66 .70 .82 .84 3 CHI03A 1849 1984 .29B .28B .40 .51 .55 .52 4 CHI04A 1896 1984 .29A .41 .60 .60 5 CHI05A 1889 1984 .43 .49 .73 .75 6 CHI05B 1889 1984 .34 .44 .68 .68 7 CHI06A 1699 1984 .45 .48 .46 .44 .45 .43 .57 .63 .49 .57 .51 .52 8 CHI06B 1788 1984 .29A .22A .31A .49 .68 .63 .51 .54 9 CHI08A 1671 1984 .60 .65 .70 .70 .61 .66 .49 .43 .55 .49 .63 .66 .66 10 CHI08B 1662 1984 .60 .67 .67 .58 .46 .58 .58 .60 .59 .40 .45 .62 .61 11 CHI09A 1892 1984 .25B .29A .57 .54 12 CHI09B 1902 1984 .48 .52 .40 13 CHI10B 1888 1984 .20B .20B .37 .43 14 CHI11A 1872 1984 .49 .51 .63 .67 .68 15 CHI13A 1814 1984 .50 .55 .57 .50 .52 .54 .67 16 CHI13B 1820 1984 .48 .53 .59 .60 .54 .54 .67 17 CHI14A 1851 1984 .10B .45 .70 .64 .61 18 CHI14B 1900 1984 .67 .53 .56 19 CHI15A 1895 1984 .61 .56 .61 .62 20 CHI16A 1737 1984 .63 .59 .51 .49 .58 .70 .61 .44 .48 .54 21 CHI17A 1689 1984 .57 .68 .77 .76 .76 .70 .65 .68 .68 .74 .88 .87 22 CHI18A 1869 1984 .68 .69 .56 .62 .64 PART 7: DESCRIPTIVE STATISTICS: 16:02 Mon 02 SEP 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 CHI01B 1809 1984 176 7 0 0.662 1.13 2.50 0.388 0.072 0.383 2.04 0.376 -0.017 2 2 CHI02B 1704 1984 281 11 0 0.694 0.69 3.60 0.571 0.413 0.714 2.14 0.334 -0.021 2 3 CHI03A 1849 1984 136 6 2 0.402 1.36 6.49 0.977 0.809 0.372 2.20 0.361 -0.055 1 4 CHI04A 1896 1984 89 4 1 0.435 1.34 2.62 0.537 0.707 0.278 2.22 0.543 -0.004 1 5 CHI05A 1889 1984 96 4 0 0.579 1.85 4.59 1.003 0.820 0.300 1.93 0.387 -0.002 1 6 CHI05B 1889 1984 96 4 0 0.493 1.63 4.46 1.087 0.843 0.381 2.17 0.333 0.024 1 7 CHI06A 1699 1984 286 12 0 0.488 1.02 3.31 0.524 0.675 0.312 2.19 0.374 -0.059 1 8 CHI06B 1788 1984 197 8 3 0.471 1.20 5.09 0.795 0.808 0.312 2.06 0.328 -0.053 2 9 CHI08A 1671 1984 314 13 0 0.592 0.64 3.05 0.490 0.602 0.546 2.05 0.343 -0.021 7 10 CHI08B 1662 1984 323 13 0 0.557 0.71 4.48 0.638 0.622 0.511 2.10 0.378 -0.057 2 11 CHI09A 1892 1984 93 4 2 0.411 3.11 6.85 1.695 0.803 0.343 2.05 0.375 -0.097 1 12 CHI09B 1902 1984 83 3 0 0.413 3.12 7.19 1.090 0.422 0.308 2.05 0.384 -0.035 1 13 CHI10B 1888 1984 97 4 2 0.336 2.29 9.47 2.243 0.945 0.261 1.85 0.303 -0.074 1 14 CHI11A 1872 1984 113 5 0 0.565 0.72 2.01 0.377 0.001 0.629 2.18 0.430 0.034 2 15 CHI13A 1814 1984 171 7 0 0.545 1.84 7.01 1.242 0.499 0.563 2.25 0.442 0.027 3 16 CHI13B 1820 1984 165 7 0 0.550 1.82 5.72 1.098 0.205 0.632 2.12 0.424 0.038 2 17 CHI14A 1851 1984 134 5 1 0.442 0.62 1.55 0.308 0.179 0.569 2.22 0.440 -0.060 2 18 CHI14B 1900 1984 85 3 0 0.599 0.66 1.67 0.341 -0.139 0.682 2.19 0.436 0.011 1 19 CHI15A 1895 1984 90 4 0 0.600 1.67 3.64 0.670 -0.056 0.465 2.24 0.407 0.009 2 20 CHI16A 1737 1984 248 10 0 0.585 0.48 1.69 0.301 0.237 0.692 2.04 0.358 -0.047 2 21 CHI17A 1689 1984 296 12 0 0.715 0.68 3.31 0.518 0.508 0.692 2.13 0.371 -0.022 2 22 CHI18A 1869 1984 116 5 0 0.641 0.63 1.29 0.259 0.097 0.486 1.73 0.244 0.014 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 3685 151 11 0.558 1.12 9.47 0.697 0.475 0.505 2.25 0.374 -0.025