Chronology file name : VA023.CRN Measurement file name : VA023.RWL Date checked : 02SEP96 Technician's name : MARIETTE SEKLECKI Supervisor's name : HENRI D. GRISSINO-MAYER Beginning year : 1372 Ending year : 1984 Principal investigators: D.W. STAHLE, M.K. CLEAVELAND, J.G. HEHR Site name : DRAGON RUN Site location : VIRGINIA, USA Species information : TADI BALDCYPRESS Latitude : 3737N Longitude : 7640W Elevation : 6 M Series intercorrelation: 0.583 Avg mean sensitivity : 0.434 Avg standard deviation : 0.849 Avg autocorrelation : 0.728 Number dated series : 24 Segment length tested : 50 Number problem segments: 8 Pct problem segments : 4.28 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: #9 DRA04B 1704-1774 HAS LOW CORRELATIONS WEAK OVERLAP BETWEEN EARLY AND LATER SERIES EXCELLENT DATA SET PART 5: CORRELATION OF SERIES BY SEGMENTS: 16:04 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 1350 1375 1400 1425 1450 1475 1500 1525 1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1399 1424 1449 1474 1499 1524 1549 1574 1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 DRA01A 1730 1984 .66 .76 .68 .63 .63 2 DRA01B 1800 1984 .62 .59 3 DRA01C 1730 1794 .63 .68 4 DRA02A 1762 1984 .57 .56 .73 .66 5 DRA03B 1536 1684 .74 .76 .64 .63 .71 .70 6 DRA03C 1542 1684 .74 .82 .81 .62 .58 .67 7 DRA03D 1542 1648 .71 .79 .83 .77 8 DRA04A 1757 1984 .64 .56 .64 .73 9 DRA04B 1704 1984 .25A .30B .50 .65 .47 .60 10 DRA04C 1773 1984 .54 .54 .58 .74 11 DRA05A 1372 1743 .76 .74 .53 .39B .53 .47 .34B .56 .76 .67 .66 .70 .75 .71 .34 12 DRA05B 1372 1725 .76 .74 .62 .42 .49 .63 .60 .49 .59 .65 .64 .67 .70 .70 .61 13 DRA05C 1372 1710 .74 .72 .64 .43 .43 .66 .63 .54 .66 .72 .60 .51 .35 .49 17 DRA09A 1768 1984 .60 .58 .37 .43 19 DRA09C 1768 1834 .41 .32A .39 20 DRA10A 1848 1984 .51 21 DRA10B 1848 1984 .47 22 DRA11A 1749 1984 .72 .73 .56 .46 .69 23 DRA11B 1718 1984 .47 .57 .61 .59 .55 .63 24 DRA11C 1751 1984 .65 .62 .53 .63 PART 5: CORRELATION OF SERIES BY SEGMENTS: 16:04 Mon 02 SEP 1996 Page 6 ----------------------------------------------------------------------------------------------------------------------------------- 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 1850 1875 1900 1925 1950 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 DRA01A 1730 1984 .70 .55 .41 .48 .59 2 DRA01B 1800 1984 .65 .65 .61 .56 .59 4 DRA02A 1762 1984 .64 .48 .40B .49 .60 8 DRA04A 1757 1984 .64 .51 .43 .58 .59 9 DRA04B 1704 1984 .57 .32A .52 .56 .54 10 DRA04C 1773 1984 .58 .48 .62 .40 .48 14 DRA07A 1890 1984 .36 .54 .61 .68 15 DRA08A 1904 1984 .36 .45 .55 16 DRA08B 1892 1984 .43 .47 .31A .45 17 DRA09A 1768 1984 .50 .37 .43 .61 .73 18 DRA09B 1869 1984 .65 .68 .59 .52 .56 20 DRA10A 1848 1984 .49 .50 .62 .68 .74 21 DRA10B 1848 1984 .47 .47 .57 .70 .62 22 DRA11A 1749 1984 .69 .63 .64 .74 .81 23 DRA11B 1718 1984 .67 .52 .50 .51 .52 24 DRA11C 1751 1984 .75 .70 .68 .71 .76 PART 7: DESCRIPTIVE STATISTICS: 16:04 Mon 02 SEP 1996 Page 9 ----------------------------------------------------------------------------------------------------------------------------------- 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 DRA01A 1730 1984 255 10 0 0.600 1.08 4.04 0.721 0.542 0.541 2.10 0.257 -0.011 1 2 DRA01B 1800 1984 185 7 0 0.618 1.39 4.36 0.815 0.618 0.399 2.11 0.440 -0.040 1 3 DRA01C 1730 1794 65 2 0 0.643 0.92 3.08 0.650 0.489 0.571 2.31 0.479 0.036 1 4 DRA02A 1762 1984 223 9 1 0.577 1.17 5.02 0.840 0.612 0.507 2.06 0.312 -0.034 1 5 DRA03B 1536 1684 149 6 0 0.701 0.81 3.46 0.703 0.660 0.547 2.01 0.325 -0.020 1 6 DRA03C 1542 1684 143 6 0 0.693 0.75 2.59 0.526 0.623 0.565 1.94 0.295 -0.020 1 7 DRA03D 1542 1648 107 4 0 0.745 0.72 3.37 0.547 0.748 0.547 2.09 0.406 -0.061 1 8 DRA04A 1757 1984 228 9 0 0.587 1.60 4.84 1.009 0.734 0.337 2.25 0.322 -0.053 1 9 DRA04B 1704 1984 281 11 3 0.458 1.30 4.93 0.916 0.783 0.371 1.97 0.314 -0.011 1 10 DRA04C 1773 1984 212 9 0 0.554 1.77 5.18 1.005 0.768 0.316 1.93 0.331 -0.006 1 11 DRA05A 1372 1743 372 15 2 0.582 0.70 5.46 0.579 0.822 0.381 2.08 0.316 -0.017 1 12 DRA05B 1372 1725 354 15 0 0.615 0.78 5.58 0.640 0.839 0.364 2.21 0.356 0.024 1 13 DRA05C 1372 1710 339 14 0 0.575 0.61 6.07 0.638 0.843 0.433 2.40 0.325 -0.011 1 14 DRA07A 1890 1984 95 4 0 0.509 1.04 2.84 0.592 0.655 0.375 2.27 0.420 -0.027 1 15 DRA08A 1904 1984 81 3 0 0.488 0.80 2.36 0.520 0.588 0.443 2.28 0.472 0.010 1 16 DRA08B 1892 1984 93 4 1 0.379 1.04 4.81 0.846 0.676 0.465 2.01 0.308 -0.070 1 17 DRA09A 1768 1984 217 9 0 0.520 1.16 4.22 0.839 0.657 0.487 2.24 0.373 -0.032 1 18 DRA09B 1869 1984 116 5 0 0.604 1.91 7.39 1.775 0.829 0.470 2.21 0.447 0.019 1 19 DRA09C 1768 1834 67 3 1 0.403 0.99 2.92 0.735 0.645 0.514 2.00 0.380 -0.071 1 20 DRA10A 1848 1984 137 6 0 0.620 1.29 6.19 0.950 0.712 0.407 2.27 0.409 0.005 1 21 DRA10B 1848 1984 137 6 0 0.543 0.99 3.07 0.558 0.669 0.445 2.11 0.422 -0.004 1 22 DRA11A 1749 1984 236 10 0 0.668 1.36 9.78 1.365 0.793 0.447 2.07 0.326 -0.023 1 23 DRA11B 1718 1984 267 11 0 0.540 1.26 6.41 1.059 0.776 0.440 2.07 0.331 0.004 1 24 DRA11C 1751 1984 234 9 0 0.665 1.45 8.27 1.333 0.768 0.410 2.08 0.369 -0.065 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 4593 187 8 0.583 1.11 9.78 0.849 0.728 0.434 2.40 0.348 -0.018