Chronology file name : NONE
Measurement file name : CANA044.RWL
Date checked : 16JAN96
Technician's name : MARIETTE SEKLECKI
Supervisor's name : HENRI D. GRISSINO-MAYER
Beginning year : 1830
Ending year : 1988
Principal investigators: F. H. SCHWEINGRUBER
Site name : WILLOW LAKE
Site location : CANADA
Species information : PCMA BLACK SPRUCE
Latitude : 6210N
Longitude : 11908W
Elevation : 620 M
Series intercorrelation: 0.563
Avg mean sensitivity : 0.193
Avg standard deviation : 0.303
Avg autocorrelation : 0.770
Number dated series : 23
Segment length tested : 50
Number problem segments: 6
Pct problem segments : 7.23
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:
#17 811522 HAS LOW CORRELATION AND SHOULD BE DELETED
STILL A VERY GOOD DATA SET
PART 5: CORRELATION OF SERIES BY SEGMENTS: 17:14 Tue 16 JAN 1996 Page 5
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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 1825 1850 1875 1900 1925 1950
1874 1899 1924 1949 1974 1999
--- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
1 811411 1890 1988 .64 .64 .72 .68
2 811412 1898 1988 .75 .69 .60 .56
3 811421 1950 1988 .42
4 811422 1951 1988 .36
5 811441 1830 1987 .82 .31A .36 .62 .51 .56
6 811442 1830 1987 .79 .57 .62 .67 .67 .68
7 811451 1857 1987 .49 .77 .69 .58 .65
8 811452 1864 1942 .75 .70 .69
9 811481 1870 1958 .54 .55 .70 .71
10 811482 1869 1986 .31A .51 .62 .64 .64
11 811491 1911 1988 .47 .45 .46
12 811492 1921 1988 .70 .71 .72
13 811501 1932 1988 .62 .54
14 811511 1878 1988 .52 .58 .64 .62
15 811512 1877 1988 .48 .58 .59 .68
16 811521 1853 1988 .54 .61 .59 .49 .54
17 811522 1895 1988 .03B-.01B .08B .21A
18 811531 1875 1988 .53 .58 .58 .51
19 811532 1886 1969 .58 .55 .36
20 811541 1919 1988 .64 .66 .55
21 811542 1923 1988 .54 .49 .34
22 811551 1901 1988 .73 .68 .71
23 811552 1910 1988 .69 .63 .61
PART 7: DESCRIPTIVE STATISTICS: 17:14 Tue 16 JAN 1996 Page 6
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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 811411 1890 1988 99 4 0 0.648 0.84 1.78 0.403 0.870 0.195 2.00 0.356 -0.014 2
2 811412 1898 1988 91 4 0 0.642 0.93 1.50 0.267 0.690 0.179 1.96 0.356 -0.003 1
3 811421 1950 1988 39 1 0 0.423 1.55 2.41 0.357 0.660 0.151 1.87 0.437 0.036 1
4 811422 1951 1988 38 1 0 0.356 1.93 2.88 0.457 0.615 0.158 2.25 0.433 0.108 1
5 811441 1830 1987 158 6 1 0.552 0.59 1.99 0.336 0.811 0.223 1.95 0.262 -0.020 1
6 811442 1830 1987 158 6 0 0.698 0.57 1.96 0.370 0.890 0.215 2.07 0.363 0.002 1
7 811451 1857 1987 131 5 0 0.592 0.73 1.60 0.298 0.677 0.225 2.10 0.329 -0.008 2
8 811452 1864 1942 79 3 0 0.745 0.65 1.35 0.187 0.454 0.217 1.81 0.311 0.024 1
9 811481 1870 1958 89 4 0 0.653 0.51 1.00 0.148 0.683 0.191 2.19 0.388 -0.015 1
10 811482 1869 1986 118 5 1 0.507 0.41 1.28 0.254 0.826 0.193 2.06 0.321 0.022 1
11 811491 1911 1988 78 3 0 0.510 0.87 1.82 0.322 0.503 0.301 1.94 0.331 0.023 1
12 811492 1921 1988 68 3 0 0.731 0.70 1.85 0.398 0.889 0.206 1.90 0.383 0.049 1
13 811501 1932 1988 57 2 0 0.580 0.73 1.38 0.280 0.693 0.229 2.02 0.456 0.073 1
14 811511 1878 1988 111 4 0 0.575 0.69 1.59 0.277 0.869 0.148 2.07 0.411 -0.026 1
15 811512 1877 1988 112 4 0 0.557 0.69 1.63 0.421 0.942 0.151 1.99 0.443 -0.022 1
16 811521 1853 1988 136 5 0 0.545 0.48 1.43 0.371 0.962 0.195 1.96 0.350 -0.058 1
17 811522 1895 1988 94 4 4 0.053 0.56 1.24 0.333 0.954 0.150 1.96 0.406 -0.035 1
18 811531 1875 1988 114 4 0 0.532 0.48 1.70 0.341 0.945 0.158 2.05 0.368 -0.091 1
19 811532 1886 1969 84 3 0 0.502 0.46 1.08 0.213 0.880 0.169 2.03 0.409 -0.035 1
20 811541 1919 1988 70 3 0 0.568 0.87 1.54 0.270 0.573 0.224 2.04 0.434 -0.017 1
21 811542 1923 1988 66 3 0 0.438 0.61 1.13 0.164 0.517 0.218 2.13 0.430 0.007 1
22 811551 1901 1988 88 3 0 0.699 0.96 1.67 0.254 0.631 0.167 1.97 0.377 0.004 1
23 811552 1910 1988 79 3 0 0.629 0.81 1.24 0.157 0.477 0.146 2.09 0.431 -0.010 2
--- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- --
Total or mean: 2157 83 6 0.563 0.69 2.88 0.303 0.770 0.193 2.25 0.371 -0.009