Boulder Pass, Montana - MT141 Additional Site Information Gregory T. Pederson COFECHA output: Chronology file name : MT141.CRN Measurement file name : MT141.RWL Date checked : 30JUL19 Checked by : B. Bauer Beginning year : 1540 Ending year : 2004 Principal investigators: Gregory T. Pederson Site name : Boulder Pass Site location : Montana Species information : LALY SUBALPINE LARCH Latitude : 4858 Longitude : -11406 Elevation : 2260M Series intercorrelation: 0.708 Avg mean sensitivity : 0.391 Avg standard deviation : 0.274 Avg autocorrelation : 0.539 Number dated series : 38 Segment length tested : 50 Number problem segments: 18 Pct problem segments : 4.03 PART 5: CORRELATION OF SERIES BY SEGMENTS: Boulder Pass 15:57 Tue 30 Jul 2019 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 1550 1575 1600 1625 1650 1675 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 1599 1624 1649 1674 1699 1724 1749 1774 1799 1824 1849 1874 1899 1924 1949 1974 1999 2024 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 BPC001a 1740 2004 .49 .69 .76 .81 .68 .60 .80 .83 .87 .89 .91 2 BPC001b 1729 2004 .33B .53 .73 .75 .68 .72 .85 .87 .88 .77 .78 3 BPC002a 1740 1969 .86 .85 .79 .77 .75 .76 .81 .81 .50 4 BPC002b 1664 1913 .58 .75 .86 .80 .83 .81 .84 .80 .69 .65 5 BPC004a 1735 2004 .72 .74 .72 .72 .72 .72 .80 .75 .72 .83 .84 6 BPC004b 1751 2004 .72 .79 .78 .74 .76 .89 .85 .82 .85 .86 7 BPC007b 1735 2004 .23B .49 .75 .80 .83 .71 .81 .84 .79 .79 .79 8 BPC009b 1792 1999 .89 .89 .87 .79 .89 .90 .45 .33B 9 BPC011a 1740 1919 .30B .51 .58 .64 .70 .59 .30A 10 BPC012a 1763 2004 .55 .64 .79 .85 .77 .78 .78 .80 .47 .50 11 BPC013a 1645 2004 .82 .83 .85 .88 .83 .82 .84 .83 .75 .68 .81 .81 .82 .89 .88 12 BPC013b 1626 2004 .86 .83 .81 .86 .86 .79 .77 .82 .77 .77 .85 .82 .86 .84 .85 13 BPC013c 1625 2004 .43 .86 .89 .86 .78 .76 .82 .84 .83 .81 .82 .80 .85 .91 .92 14 BPC015a 1664 2004 .74 .80 .78 .78 .76 .74 .85 .88 .91 .83 .73 .83 .84 .87 15 BPC015b 1666 1945 .46 .59 .73 .78 .80 .75 .78 .79 .82 .83 .55 16 BPC017a 1581 1984 .30A .41B .59 .79 .85 .86 .79 .82 .80 .85 .86 .73 .78 .78 .36 .37 17 BPC017b 1665 1950 .44 .42 .38 .57 .70 .72 .79 .72 .68 .67 .66 .65 18 BPC018b 1730 2003 .47 .71 .72 .72 .75 .70 .70 .78 .46 .44 .43 19 BPC19b1 1736 2004 .43 .62 .81 .79 .85 .78 .84 .91 .89 .89 .89 20 BPC022b 1739 2004 .23B .44 .75 .88 .90 .77 .71 .62 .73 .86 .88 21 BPC023a 1734 2004 .20B .43 .80 .81 .77 .74 .87 .88 .86 .87 .87 22 BPC025a 1664 1923 .47B .66 .76 .71 .80 .77 .77 .84 .82 .58 23 BPC25b1 1713 2004 .24A .23A .57 .71 .73 .79 .82 .85 .84 .83 .72 .60 24 BPC25b2 1586 1686 .59 .76 .80 .84 25 BPC029a 1620 1970 .43 .41 .61 .75 .79 .64 .66 .75 .74 .76 .79 .82 .77 .56 26 BPC029b 1596 1932 .54 .55 .54 .33 .48 .65 .78 .76 .72 .83 .81 .71 .51 .38 27 BPC031a 1587 2004 .46 .60 .76 .76 .83 .83 .76 .80 .78 .70 .63 .67 .78 .62 .66 .85 .86 28 BPC031b 1796 2004 .73 .69 .70 .70 .83 .73 .62 .80 .81 29 BPC031c 1670 2004 .44 .55 .74 .77 .71 .63 .73 .78 .66 .79 .79 .71 .86 .89 30 BPC033b 1720 1900 .32B .65 .80 .68 .63 .65 .55 .54 31 BPC034a 1638 2004 .71 .72 .83 .87 .79 .74 .70 .70 .76 .71 .82 .85 .83 .87 .87 32 BPC034b 1551 2004 -.02B .11B .55 .75 .75 .89 .89 .86 .82 .74 .70 .62 .67 .85 .82 .82 .80 .81 33 BPC035a 1656 2004 .57 .73 .78 .81 .81 .72 .77 .72 .60 .79 .85 .86 .89 .91 34 BPC035b 1540 2004 -.03B .15B .63 .55 .47 .65 .71 .70 .71 .74 .71 .70 .65 .68 .85 .91 .91 .91 35 BPC36aN 1710 2004 .47 .36 .57 .68 .75 .72 .64 .80 .76 .66 .78 .81 36 BPC038 1759 2004 .66 .82 .83 .72 .59 .70 .66 .77 .87 .87 37 BPC038b 1739 2004 .27B .57 .72 .78 .85 .66 .69 .64 .44 .61 .63 38 BPC038c 1794 1964 .84 .82 .84 .83 .86 .88 .60 Av segment correlation -.03 .36 .56 .66 .64 .72 .71 .61 .69 .75 .77 .77 .72 .76 .77 .72 .77 .81 PART 7: DESCRIPTIVE STATISTICS: Boulder Pass 15:57 Tue 30 Jul 2019 Page 10 ----------------------------------------------------------------------------------------------------------------------------------- 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 BPC001a 1740 2004 265 11 0 .771 .82 2.01 .384 .511 .403 2.48 .329 -.010 1 2 BPC001b 1729 2004 276 11 1 .723 .72 2.26 .346 .415 .430 2.68 .349 -.008 1 3 BPC002a 1740 1969 230 9 0 .711 .93 1.90 .339 .340 .360 2.54 .370 -.001 1 4 BPC002b 1664 1913 250 10 0 .743 .75 1.71 .305 .545 .332 2.60 .351 .014 1 5 BPC004a 1735 2004 270 11 0 .750 .82 3.28 .451 .708 .335 2.46 .266 -.016 1 6 BPC004b 1751 2004 254 10 0 .803 .58 1.98 .312 .673 .383 2.47 .276 -.038 1 7 BPC007b 1735 2004 270 11 1 .709 .29 .62 .107 .464 .318 2.46 .248 -.013 1 8 BPC009b 1792 1999 208 8 1 .711 .60 1.48 .285 .505 .412 2.59 .435 -.018 1 9 BPC011a 1740 1919 180 7 2 .470 .59 2.34 .333 .649 .387 2.58 .355 -.008 1 10 BPC012a 1763 2004 242 10 0 .655 .36 .91 .182 .455 .478 2.68 .405 -.033 1 11 BPC013a 1645 2004 360 15 0 .812 .54 1.37 .189 .448 .321 2.45 .291 .001 1 12 BPC013b 1626 2004 379 15 0 .815 .57 1.53 .219 .506 .327 2.51 .301 -.016 1 13 BPC013c 1625 2004 380 15 0 .772 .39 1.15 .166 .344 .414 2.60 .406 .000 1 14 BPC015a 1664 2004 341 14 0 .803 .35 1.20 .168 .603 .370 2.49 .350 -.044 1 15 BPC015b 1666 1945 280 11 0 .677 .50 1.32 .221 .557 .351 2.54 .369 -.048 1 16 BPC017a 1581 1984 404 16 2 .662 .28 .95 .157 .635 .396 2.55 .340 -.011 1 17 BPC017b 1665 1950 286 12 0 .600 .29 1.57 .209 .829 .316 2.76 .320 -.042 1 18 BPC018b 1730 2003 274 11 0 .625 .52 1.65 .289 .476 .488 2.60 .349 -.023 1 19 BPC19b1 1736 2004 269 11 0 .798 .36 1.07 .208 .513 .460 2.58 .350 -.028 1 20 BPC022b 1739 2004 266 11 1 .717 .47 1.65 .310 .519 .567 2.69 .397 -.042 2 21 BPC023a 1734 2004 271 11 1 .742 .65 2.90 .590 .702 .575 2.60 .411 -.012 1 22 BPC025a 1664 1923 260 10 1 .688 .55 1.33 .235 .426 .381 2.64 .424 -.011 1 23 BPC25b1 1713 2004 292 12 2 .660 .62 2.05 .306 .436 .459 2.55 .309 -.012 1 24 BPC25b2 1586 1686 101 4 0 .738 .56 1.14 .206 .329 .367 2.45 .377 -.041 1 25 BPC029a 1620 1970 351 14 0 .670 .43 1.13 .195 .599 .360 2.54 .338 -.020 1 26 BPC029b 1596 1932 337 14 0 .578 .68 2.24 .374 .654 .401 2.67 .368 -.028 3 27 BPC031a 1587 2004 418 17 0 .724 .77 1.76 .351 .530 .381 2.59 .373 -.025 1 28 BPC031b 1796 2004 209 9 0 .746 .47 .97 .176 .444 .345 2.49 .326 -.013 1 29 BPC031c 1670 2004 335 14 0 .727 .73 1.59 .295 .315 .423 2.42 .288 -.019 1 30 BPC033b 1720 1900 181 8 1 .516 .84 2.80 .461 .612 .407 2.82 .457 -.033 1 31 BPC034a 1638 2004 367 15 0 .793 .47 1.02 .183 .620 .293 2.41 .269 -.001 1 32 BPC034b 1551 2004 454 18 2 .680 .56 1.66 .310 .762 .317 2.62 .334 .013 1 33 BPC035a 1656 2004 349 14 0 .778 .68 1.62 .243 .404 .321 2.54 .321 -.015 1 34 BPC035b 1540 2004 465 18 2 .633 .55 1.76 .286 .533 .403 2.45 .216 -.021 1 35 BPC36aN 1710 2004 295 12 0 .686 .72 2.17 .368 .648 .375 2.54 .343 -.032 1 36 BPC038 1759 2004 246 10 0 .737 .40 1.14 .209 .510 .483 2.55 .418 -.059 1 37 BPC038b 1739 2004 266 11 1 .613 .37 1.18 .228 .616 .496 2.61 .505 -.015 1 38 BPC038c 1794 1964 171 7 0 .724 1.09 2.59 .431 .399 .353 2.57 .364 .021 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 11052 447 18 .708 .56 3.28 .274 .539 .391 2.82 .344 -.018