Chronology file name : MEX156.CRN
Measurement file name : MEX156.RWL
Date checked : 16JAN25
Checked by : NOAA-Paleoclimatology
Beginning year : 1873
Ending year : 2015
Principal investigators: Quadri Silva Zavaleta
Site name : IztaccÃhuatl-Popocatépetl National Park
Site location : Mexico
Species information : PI MEXICAN MOUNTAIN PINE
Latitude : 775.0M
Longitude : 1908
Elevation : pine3
Series intercorrelation: 0.222
Avg mean sensitivity : 0.277
Avg standard deviation : 1.505
Avg autocorrelation : 0.809
Number dated series : 45
Segment length tested : 50
Number problem segments: 117
Pct problem segments : 71.78
PART 5: CORRELATION OF SERIES BY SEGMENTS: MEX156 22:11 Thu 16 Jan 2025 Page 5
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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 1875 1900 1925 1950 1975
1924 1949 1974 1999 2024
--- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
1 A2P1 1905 2015 .23B .23B .27B .16B
2 A2P2 1941 2015 .22A .21A .28A
3 A2P3 1906 2015 .10B .25B .25A .16B
4 A2P4 1928 2015 .27B .36 .23B
5 A7P1 1880 2015 -.28B-.26B .19B .34B .34
6 A7P2 1916 2015 .01B .19B .17B .35
7 A15P1 1907 2015 .20B .28A .22B .23B
8 A15P2 1897 2015 -.02B .11B .34 .21A .26A
9 A15P3 1882 2015 -.10B .28A .27B .14B .28A
10 A15P4 1950 2015 .41 .37
11 A17P1 1926 2015 .36 .28A .25A
12 A17P2 1955 2015 .32A .25B
13 A17P3 1965 2015 .57 .51
14 A17P4 1916 2015 .14B .22B .32A .17B
15 A17P5 1938 2015 .20B .28A .37
16 A18P2 1918 2015 .06B .21A .32A .35
17 A18P3 1952 2015 .39 .40
18 A18P1 1971 2015 .35
19 A18P4 1948 2015 .12B .12B .08B
20 A18P6 1910 2015 .14B .23A .21B .15B
21 A18P5 1907 2015 -.01B .28A .35 .25A
22 A20P1 1917 2015 .15B .21A .42 .55
23 A20P3 1876 2015 -.07B .21B .21B .23B .32A
24 A20P4 1905 2015 .27A .31B .31B .15B
25 A20P2 1918 2015 .18B .10B .32A .27A
26 A21P1 1904 2015 .14B .19B .21B .26A
27 A21P5 1898 2015 .27A .27A .21A .16B .20B
28 A21P3 1894 2015 .19B .48 .27A .20B .18A
29 A21P2 1922 2015 .13B .15B .39 .22B
30 A21P4 1922 2015 .36 .33A .25A .15A
31 A25P2 1907 2015 -.09B-.17B-.14B-.03B
32 A25P3 1941 2015 .50 .51 .46
33 A25P4 1923 2015 .24B .24B .28B .17B
34 A25P5 1966 2015 .59
35 A25P1 1938 2015 .41 .45 .37
36 B4P3 1873 2015 -.02B-.07B .12B .39 .43
37 B4P2 1911 2015 .22A .49 .39 .37
38 B4P1 1916 2015 .18B .26B .26B .33
39 B4P4 1923 2015 .22B .40 .34 .26A
40 B4P5 1920 2015 .19B .35 .33 .39
41 B5P4 1928 2015 .14B .34 .56
42 B5P5 1923 2015 .35 .36 .44 .41B
43 B5P3 1929 2015 .29B .39 .29A
44 B5P2 1927 2015 .41 .36 .21B
45 B5P1 1904 2015 .04B .23B .24B .15B
Av segment correlation -.01 .15 .25 .30 .28
PART 7: DESCRIPTIVE STATISTICS: MEX156 22:11 Thu 16 Jan 2025 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 A2P1 1905 2015 111 4 4 .165 2.43 9.10 1.676 .925 .268 2.71 .560 .052 1
2 A2P2 1941 2015 75 3 3 .321 2.95 8.15 2.246 .951 .255 2.63 .501 .052 1
3 A2P3 1906 2015 110 4 4 .148 2.07 4.89 1.126 .892 .248 2.64 .455 .060 1
4 A2P4 1928 2015 88 3 2 .263 2.16 4.78 1.078 .816 .246 2.84 .634 -.056 1
5 A7P1 1880 2015 136 5 4 .072 1.31 3.25 .693 .809 .297 2.59 .404 -.062 2
6 A7P2 1916 2015 100 4 3 .178 1.10 3.60 .882 .898 .361 2.77 .388 -.013 1
7 A15P1 1907 2015 109 4 4 .227 2.21 6.42 1.805 .922 .308 2.74 .469 .020 2
8 A15P2 1897 2015 119 5 4 .149 1.37 3.46 .663 .564 .372 2.72 .470 -.045 2
9 A15P3 1882 2015 134 5 5 .175 1.85 3.82 .720 .764 .226 2.71 .404 -.019 1
10 A15P4 1950 2015 66 2 0 .390 2.02 6.30 1.321 .848 .297 2.58 .512 -.105 2
11 A17P1 1926 2015 90 3 2 .333 3.09 9.64 2.056 .916 .246 2.37 .375 -.005 1
12 A17P2 1955 2015 61 2 2 .245 2.59 4.47 1.227 .839 .275 2.61 .510 -.017 1
13 A17P3 1965 2015 51 2 0 .506 3.52 5.64 1.014 .372 .278 2.54 .478 .058 1
14 A17P4 1916 2015 100 4 4 .155 1.43 5.95 1.118 .921 .294 2.41 .356 -.054 2
15 A17P5 1938 2015 78 3 2 .300 3.94 10.21 2.304 .812 .316 2.48 .364 .048 1
16 A18P2 1918 2015 98 4 3 .195 3.34 9.25 2.323 .941 .245 2.79 .500 -.074 3
17 A18P3 1952 2015 64 2 0 .355 4.92 8.59 1.746 .379 .346 2.58 .515 -.033 1
18 A18P1 1971 2015 45 1 0 .352 3.95 6.02 1.233 .746 .187 2.61 .744 -.016 2
19 A18P4 1948 2015 68 3 3 .112 2.58 5.30 1.101 .710 .300 2.46 .415 -.029 1
20 A18P6 1910 2015 106 4 4 .150 2.82 10.25 1.949 .813 .325 2.65 .406 .066 1
21 A18P5 1907 2015 109 4 3 .128 2.82 10.52 1.997 .840 .339 2.57 .394 .000 1
22 A20P1 1917 2015 99 4 2 .377 1.26 2.72 .496 .427 .362 2.52 .492 -.076 1
23 A20P3 1876 2015 140 5 5 .097 2.37 8.92 1.460 .785 .313 2.61 .318 .009 1
24 A20P4 1905 2015 111 4 4 .184 2.02 7.02 1.811 .930 .294 2.71 .489 -.043 1
25 A20P2 1918 2015 98 4 4 .205 1.68 6.88 1.343 .839 .333 2.67 .351 -.043 1
26 A21P1 1904 2015 112 4 4 .204 2.75 8.50 2.435 .966 .260 2.66 .441 .016 1
27 A21P5 1898 2015 118 5 5 .207 2.72 6.61 1.658 .908 .238 2.82 .425 .055 1
28 A21P3 1894 2015 122 5 4 .185 3.10 8.54 2.239 .889 .278 2.77 .481 -.038 2
29 A21P2 1922 2015 94 4 3 .151 3.77 10.93 2.765 .894 .294 2.63 .464 -.053 2
30 A21P4 1922 2015 94 4 3 .265 2.68 5.91 1.620 .880 .316 2.59 .424 -.008 1
31 A25P2 1907 2015 109 4 4 -.077 1.75 4.24 1.084 .933 .212 2.53 .398 -.033 2
32 A25P3 1941 2015 75 3 0 .448 3.10 5.89 1.101 .718 .204 2.43 .304 -.053 1
33 A25P4 1923 2015 93 4 4 .161 2.69 7.30 1.628 .855 .241 2.48 .435 -.009 2
34 A25P5 1966 2015 50 1 0 .590 5.71 9.81 1.311 .559 .159 2.58 .472 -.044 1
35 A25P1 1938 2015 78 3 0 .403 4.03 6.14 .793 .475 .146 2.57 .358 -.098 3
36 B4P3 1873 2015 143 5 3 .161 1.49 6.01 1.321 .899 .368 2.68 .442 -.076 2
37 B4P2 1911 2015 105 4 1 .308 2.71 10.19 1.999 .947 .236 2.61 .394 -.008 1
38 B4P1 1916 2015 100 4 3 .235 2.67 5.27 .901 .567 .253 2.39 .308 -.035 1
39 B4P4 1923 2015 93 4 2 .209 2.40 4.13 .775 .690 .228 2.52 .518 .017 1
40 B4P5 1920 2015 96 4 1 .274 1.88 4.75 1.140 .900 .262 2.58 .435 .026 1
41 B5P4 1928 2015 88 3 1 .344 3.06 7.08 1.575 .897 .207 2.93 .480 .000 3
42 B5P5 1923 2015 93 4 1 .412 3.72 8.95 2.231 .884 .283 2.60 .471 -.032 2
43 B5P3 1929 2015 87 3 2 .233 3.01 6.72 1.684 .717 .351 2.41 .404 -.057 1
44 B5P2 1927 2015 89 3 1 .246 5.03 10.43 1.429 .554 .209 2.75 .449 -.007 1
45 B5P1 1904 2015 112 4 4 .129 3.86 8.87 2.448 .926 .224 2.61 .485 .011 1
--- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- --
Total or mean: 4317 163 117 .222 2.62 10.93 1.505 .809 .277 2.93 .440 -.016