HORSETOOTH SUMMIT, COLORADO - CO039 Additional Site Information H. C. FRITTS, R. L. HOLMES Chronology file name : CO039.CRN Measurement file name : CO039.RWL Date checked : 8AUG23 Checked by : NOAA Paleoclimatology Beginning year : 1580 Ending year : 1964 Principal investigators: H. C. FRITTS, R. L. HOLMES Site name : HORSETOOTH SUMMIT Site location : COLORADO Species information : PSME DOUGLAS-FIR Latitude : 4034 Longitude : -10512 Elevation : 2073M Series intercorrelation: 0.722 Avg mean sensitivity : 0.347 Avg standard deviation : 0.345 Avg autocorrelation : 0.699 Number dated series : 20 Segment length tested : 50 Number problem segments: 0 Pct problem segments : 0.00 PART 5: CORRELATION OF SERIES BY SEGMENTS: co039 11:18 Mon 28 Aug 2023 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 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 522011 1610 1964 .72 .71 .76 .81 .77 .80 .75 .68 .65 .74 .72 .59 .55 .63 2 522012 1600 1964 .64 .67 .66 .72 .76 .79 .72 .65 .63 .68 .72 .67 .79 .69 3 522051 1850 1964 .73 .75 .87 .89 4 522052 1850 1964 .68 .55 .49 .67 5 522091 1850 1964 .72 .70 .74 .84 6 522092 1850 1964 .62 .68 .82 .90 7 522111 1640 1964 .72 .77 .62 .60 .61 .65 .74 .81 .88 .80 .65 .74 .85 8 522112 1720 1964 .66 .70 .64 .80 .60 .63 .85 .76 .73 .81 9 522121 1780 1964 .56 .69 .75 .70 .57 .67 .79 10 522122 1780 1964 .74 .83 .73 .63 .35 .53 .79 11 522131 1640 1963 .86 .87 .82 .75 .75 .82 .78 .77 .84 .74 .38 .36 .73 12 522132 1640 1964 .80 .80 .82 .80 .68 .71 .79 .78 .76 .70 .47 .45 .76 13 522141 1830 1964 .69 .77 .63 .50 .72 14 522142 1820 1964 .85 .85 .88 .79 .64 .73 15 522151 1820 1964 .79 .77 .71 .65 .76 .77 16 522152 1840 1964 .82 .82 .69 .81 .81 17 522171 1660 1964 .87 .84 .82 .80 .81 .81 .81 .79 .70 .70 .88 .89 18 522172 1660 1964 .78 .77 .67 .64 .72 .78 .82 .81 .72 .69 .84 .87 19 522181 1610 1964 .70 .78 .86 .83 .69 .54 .66 .59 .53 .60 .50 .53 .67 .80 20 522182 1580 1964 .66 .67 .66 .77 .78 .66 .49 .50 .59 .68 .67 .69 .80 .79 Av segment correlation .68 .75 .78 .78 .73 .70 .70 .70 .73 .75 .72 .63 .68 .79 PART 7: DESCRIPTIVE STATISTICS: co039 11:18 Mon 28 Aug 2023 Page 8 ------------------------------------------------------------------------------------------------------------------------------------ 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 522011 1610 1964 355 14 0 .724 .37 1.24 .218 .596 .417 2.56 .302 -.025 1 2 522012 1600 1964 365 14 0 .696 .37 1.41 .224 .590 .429 2.66 .313 -.030 1 3 522051 1850 1964 115 4 0 .821 1.16 3.00 .574 .536 .381 2.58 .413 -.013 5 4 522052 1850 1964 115 4 0 .643 1.20 3.01 .512 .339 .356 2.77 .419 .027 3 5 522091 1850 1964 115 4 0 .771 .90 2.11 .423 .621 .321 2.54 .409 -.026 1 6 522092 1850 1964 115 4 0 .760 1.02 2.63 .476 .619 .297 2.59 .463 -.026 1 7 522111 1640 1964 325 13 0 .743 .45 1.87 .283 .701 .371 2.73 .461 -.020 1 8 522112 1720 1964 245 10 0 .727 .58 2.01 .234 .332 .322 2.84 .389 -.018 1 9 522121 1780 1964 185 7 0 .697 .59 2.92 .526 .821 .365 2.53 .312 -.020 1 10 522122 1780 1964 185 7 0 .697 .69 2.52 .461 .786 .306 2.69 .413 -.022 1 11 522131 1640 1963 324 13 0 .750 .45 2.68 .332 .861 .301 2.72 .389 -.007 1 12 522132 1640 1964 325 13 0 .738 .46 2.62 .347 .862 .307 2.66 .322 -.013 1 13 522141 1830 1964 135 5 0 .602 .82 2.77 .520 .753 .315 2.74 .369 .015 1 14 522142 1820 1964 145 6 0 .769 .95 2.89 .554 .684 .324 2.61 .420 -.016 1 15 522151 1820 1964 145 6 0 .712 .86 2.14 .418 .688 .296 2.54 .400 -.037 1 16 522152 1840 1964 125 5 0 .793 .84 1.99 .363 .590 .321 2.46 .306 -.023 1 17 522171 1660 1964 305 12 0 .796 .50 2.42 .392 .812 .351 2.69 .370 -.024 1 18 522172 1660 1964 305 12 0 .743 .56 2.49 .427 .790 .334 2.64 .411 -.035 3 19 522181 1610 1964 355 14 0 .643 .24 .95 .136 .668 .344 2.53 .304 .020 1 20 522182 1580 1964 385 14 0 .678 .33 1.76 .305 .846 .352 2.67 .404 -.010 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 4669 181 0 .722 .55 3.01 .345 .699 .347 2.84 .372 -.015