Chronology file name : AK042.CRN Measurement file name : AK042.RWL Date checked : 10MAR05 Checked by : H. ADAMS AND J. LUKAS Beginning year : 1739 Ending year : 1996 Principal investigators: Andrea Lloyd Site name : Twelvemile Summit below treeline Site location : Alaska Species information : PCGL WHITE SPRUCE Latitude : 6522 Longitude : -14556 Elevation : 945M Series intercorrelation: 0.618 Avg mean sensitivity : 0.240 Avg standard deviation : 0.169 Avg autocorrelation : 0.784 Number dated series : 12 Segment length tested : 50 Number problem segments: 3 Pct problem segments : 3.66 PART 5: CORRELATION OF SERIES BY SEGMENTS: ak042.rwl 13:41 Thu 10 Mar 2005 Page 5 ------------------------------------------------------------------------------------------------------------------------------------ Correlations of 50-year dated segments, lagged 25 years Flags: A = correlation under .3281 but highest as dated; B = correlation higher at other than dated position Seq Series Time_span 1750 1775 1800 1825 1850 1875 1900 1925 1950 1799 1824 1849 1874 1899 1924 1949 1974 1999 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 TW0-08 1771 1996 .57 .58 .49 .46 .64 .74 .64 .55 .63 2 TW0-10 1813 1996 .30A .41 .66 .76 .78 .66 .72 3 TW0-11 1888 1996 .73 .77 .86 .75 4 TW0-1A 1857 1996 .56 .77 .82 .74 .71 5 TW0-2 1867 1996 .19B .41 .71 .66 .67 6 TW0-3 1794 1996 .34 .38 .58 .65 .75 .67 .55 .61 7 TW0-4 1810 1996 .69 .68 .49 .69 .86 .81 .66 8 TW0-5 1828 1996 .39 .71 .80 .73 .68 .64 9 TW0-6 1797 1996 .64 .65 .54 .46 .44 .65 .65 .59 10 TW0-7A 1835 1996 .73 .74 .85 .79 .75 .86 11 TW0-7B 1785 1985 .24B .43 .55 .74 .83 .84 .82 .83 12 TW0-9 1739 1996 .45 .45 .51 .42 .46 .71 .77 .73 .66 Av segment correlation .51 .45 .49 .53 .57 .71 .75 .70 .69 PART 7: DESCRIPTIVE STATISTICS: ak042.rwl 13:41 Thu 10 Mar 2005 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 TW0-08 1771 1996 226 9 0 .587 .18 .64 .085 .740 .250 2.80 .429 -.003 1 2 TW0-10 1813 1996 184 7 1 .633 .32 1.05 .194 .854 .226 2.71 .465 -.043 3 3 TW0-11 1888 1996 109 4 0 .741 .49 1.14 .232 .838 .231 2.83 .495 -.059 1 4 TW0-1A 1857 1996 140 5 0 .705 .50 .94 .199 .840 .183 2.62 .526 .043 1 5 TW0-2 1867 1996 130 5 1 .500 .48 1.36 .269 .810 .249 2.64 .406 -.014 1 6 TW0-3 1794 1996 203 8 0 .552 .41 1.11 .243 .881 .228 2.72 .452 -.004 1 7 TW0-4 1810 1996 187 7 0 .689 .32 .92 .147 .685 .266 2.83 .437 -.044 1 8 TW0-5 1828 1996 169 6 0 .589 .52 1.14 .209 .823 .191 2.44 .361 -.023 3 9 TW0-6 1797 1996 200 8 0 .560 .21 .49 .099 .740 .250 2.67 .342 -.067 1 10 TW0-7A 1835 1996 162 6 0 .776 .42 1.12 .196 .702 .246 2.65 .487 -.058 1 11 TW0-7B 1785 1985 201 8 1 .631 .38 .95 .179 .718 .271 2.54 .447 -.022 2 12 TW0-9 1739 1996 258 9 0 .537 .17 .47 .091 .812 .257 2.55 .276 -.029 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 2169 82 3 .618 .34 1.36 .169 .784 .240 2.83 .418 -.027