Chronology file name : NONE Measurement file name : CANA069.RWL Date checked : 05FEB96 Technician's name : MARIETTE SEKLECKI Supervisor's name : HENRI D. GRISSINO-MAYER Beginning year : 1783 Ending year : 1988 Principal investigators: F.H. SCHWEINGRUBER Site name : CHURCHILL Site location : CANADA Species information : LALA Latitude : 5840N Longitude : 9329W Elevation : 50 M Series intercorrelation: 0.650 Avg mean sensitivity : 0.294 Avg standard deviation : 0.263 Avg autocorrelation : 0.790 Number dated series : 20 Segment length tested : 50 Number problem segments: 4 Pct problem segments : 3.64 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: #12 831282 SHOULD BE DIVIDED INTO TWO SERIES RATHER THAN BE MISSING ALL RINGS 1838-1851 EXCELLENT DATA SET PART 5: CORRELATION OF SERIES BY SEGMENTS: 16:11 Tue 05 FEB 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 831211 1797 1988 .72 .69 .80 .70 .64 .75 .77 .64 2 831212 1796 1984 .55 .61 .63 .39 .43 .73 .85 .65 3 831231 1826 1988 .67 .62 .48 .50 .68 .73 4 831232 1832 1988 .49 .54 .55 .62 .77 .72 5 831241 1852 1973 .73 .69 .75 .84 6 831242 1847 1984 .67 .67 .62 .60 .80 .82 7 831251 1910 1988 .40 .58 .78 8 831252 1915 1988 .56 .74 .85 9 831261 1853 1988 .63 .70 .67 .83 .76 10 831262 1851 1977 .72 .76 .67 .77 .78 11 831281 1785 1971 .66 .53 .47 .41 .35 .61 .64 12 831282 1783 1988 .56 .28B .21A .59 .56 .21B .53 .65 13 831301 1856 1988 .73 .77 .79 .76 .75 14 831302 1854 1963 .64 .67 .76 .85 15 831311 1855 1988 .70 .68 .66 .74 .69 16 831312 1853 1988 .30A .41 .71 .87 .81 17 831321 1843 1969 .69 .71 .57 .64 .82 18 831322 1827 1988 .68 .74 .61 .67 .75 .72 19 831341 1802 1988 .70 .74 .74 .66 .60 .71 .74 20 831342 1807 1907 .60 .68 .61 .66 PART 7: DESCRIPTIVE STATISTICS: 16:11 Tue 05 FEB 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 831211 1797 1988 192 8 0 0.674 0.41 1.47 0.313 0.885 0.320 1.80 0.269 -0.033 1 2 831212 1796 1984 189 8 0 0.556 0.37 1.37 0.244 0.820 0.369 1.90 0.301 -0.057 1 3 831231 1826 1988 163 6 0 0.638 0.37 1.21 0.163 0.685 0.264 1.94 0.312 -0.010 3 4 831232 1832 1988 157 6 0 0.605 0.25 0.84 0.149 0.713 0.327 1.99 0.326 -0.062 1 5 831241 1852 1973 122 4 0 0.748 0.56 1.43 0.322 0.862 0.247 1.91 0.291 -0.007 1 6 831242 1847 1984 138 6 0 0.689 0.75 1.84 0.456 0.866 0.265 2.00 0.402 0.013 1 7 831251 1910 1988 79 3 0 0.582 0.59 1.41 0.241 0.719 0.248 1.94 0.417 -0.042 1 8 831252 1915 1988 74 3 0 0.668 0.77 1.70 0.375 0.819 0.244 2.01 0.443 -0.067 1 9 831261 1853 1988 136 5 0 0.700 0.57 1.97 0.441 0.929 0.280 1.90 0.318 0.002 2 10 831262 1851 1977 127 5 0 0.750 0.61 1.77 0.361 0.874 0.270 2.07 0.345 -0.040 1 11 831281 1785 1971 187 7 0 0.534 0.24 0.70 0.124 0.654 0.289 2.17 0.320 -0.014 1 12 831282 1783 1988 206 8 3 0.487 0.23 1.11 0.161 0.865 0.278 1.95 0.269 -0.045 1 13 831301 1856 1988 133 5 0 0.743 0.52 1.09 0.186 0.585 0.276 1.95 0.330 -0.017 1 14 831302 1854 1963 110 4 0 0.740 0.53 1.14 0.197 0.567 0.293 1.99 0.378 -0.013 1 15 831311 1855 1988 134 5 0 0.689 0.46 1.50 0.286 0.880 0.204 2.01 0.320 -0.016 1 16 831312 1853 1988 136 5 1 0.629 0.54 2.45 0.360 0.742 0.268 2.01 0.275 -0.058 1 17 831321 1843 1969 127 5 0 0.714 0.36 1.28 0.223 0.785 0.325 1.91 0.307 -0.055 1 18 831322 1827 1988 162 6 0 0.680 0.35 1.42 0.278 0.832 0.333 1.89 0.296 -0.025 2 19 831341 1802 1988 187 7 0 0.694 0.47 1.22 0.265 0.808 0.311 1.82 0.263 -0.022 1 20 831342 1807 1907 101 4 0 0.624 0.34 1.38 0.281 0.863 0.391 1.97 0.394 -0.049 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 2860 110 4 0.650 0.44 2.45 0.263 0.790 0.294 2.17 0.319 -0.030