# Stahle - Blackwater River - TADI - ITRDB VA021 #---------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #---------------------------------------------------- # Template Version 4.0 # Encoding: UTF-8 # NOTE: Please cite original publication, NOAA Landing Page URL, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/4817 # Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata. # # Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-tree-4817.json # Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata. # # Data_Type: Tree Ring # # Dataset_DOI: # # Science_Keywords: #-------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/treering/measurements/northamerica/usa/va021r-crn-noaa.txt # Data_Download_Description: Raw Measurements - NOAA Template File; va021r-crn-noaa.txt # # Related_Online_Resource: https://www.ncei.noaa.gov/pub/data/paleo/treering/chronologies/northamerica/usa/va021r.crn # Related_Online_Description: CRN File; Chronology - Tucson Decadal File # #-------------------- # Contribution_Date # Date: 2002-07-01 #-------------------- # File_Last_Modified_Date # Date: 2002-07-01 #-------------------- # Title # Study_Name: Stahle - Blackwater River - TADI - ITRDB VA021 #-------------------- # Investigators # Investigators: Stahle, D.W.; Cleaveland, M.K. #-------------------- # Description_Notes_and_Keywords # Description: NOAA Template Chronology file added 2018-12-20. NOAA Template Raw Measurements file added 2019-02-08. #-------------------- # Publication # Authors: Daniel K. Stahle, Dorian J. Burnette, David W. Stahle # Journal_Name: Estuaries and Coasts # Published_Title: A Moisture Balance Reconstruction for the Drainage Basin of Albemarle Sound, North Carolina # Published_Date_or_Year: 2013 # Volume: 36 # Pages: 1340-1353 # Issue: 6 # Report_Number: # DOI: 10.1007/s12237-013-9643-y # Full_Citation: None # Abstract: Freshwater discharge into Albemarle Sound and many other large estuaries can have a major impact on the physical and biological properties of the estuary. Earlywood (EW) and latewood (LW) width tree ring chronologies recently developed from ancient trees and sub-fossil logs found at Devil's Gut of the Roanoke River, North Carolina, were used with new EW and LW width data from Blackwater River, Virginia, to reconstruct the July Palmer Hydrological Drought Index (PHDI) over the drainage basin of Albemarle Sound from 934 to 2005. This reconstruction is based on a principal component regression using millennium-long chronologies of both EW and LW widths, calibrated and verified against instrumental July PHDI from 1895 to 1985. The reconstruction provides a lengthy representation of inter-annual to multi-decadal growing season moisture variability that directly affects water quality in the Albemarle Sound estuarine ecosystem. Single-year drought and wetness extremes were more common in the modern instrumental period (1895-2005), but prolonged droughts reconstructed during the Medieval and Early Colonial eras were more severe and sustained than the reconstructed or observed droughts during the twentieth century. Several abrupt transitions between decadal drought and wetness regimes are reconstructed, especially during the Medieval Era. Composite analysis of lower-magnitude sub-decadal regime shifts in the instrumental record during the twentieth century indicates that major changes in mid-latitude circulation over the Northern Hemisphere may have been involved in these longer decadal transitions between moisture regimes over Albemarle Sound in prehistory. #-------------------- # Funding_Agency # Funding_Agency_Name: # Grant: #-------------------- # Site_Information # Site_Name: Blackwater River # Location: Virginia # Northernmost_Latitude: 36.78 # Southernmost_Latitude: 36.78 # Easternmost_Longitude: -76.88 # Westernmost_Longitude: -76.88 # Elevation_m: 9 #-------------------- # Data_Collection # Collection_Name: VA021 # First_Year: 932 # Last_Year: 1985 # Time_Unit: CE # Core_Length_m: # Parameter_Keywords: ring width # Notes: None #-------------------- # Species # Species_Name: Taxodium distichum (L.) Rich. # Common_Name: baldcypress # Tree_Species_Code: TADI #-------------------- # Variables # # PaST_Thesaurus_Download_Resource: https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf # PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format. # # Data variables follow that are preceded by '##' in columns one and two. # Variables format: shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data) # ## age_CE age,,,year Common Era,,tree ring,,,N, ## trsgi tree ring standardized growth index,,,,,tree ring,composited,standard chronology method,N, ## numsamp number of samples,,,count,,tree ring,,,N, #--------------------- # Data: # Missing_Values: NA age_CE trsgi numsamp 937 0.418 2 938 1.135 2 939 1.219 2 940 0.598 2 941 0.815 2 942 1.506 2 943 1.324 2 944 0.726 2 945 0.791 2 946 0.825 2 947 1.523 2 948 0.808 3 949 1.33 3 950 0.686 3 951 1.33 3 952 0.475 3 953 0.407 3 954 0.822 3 955 1.596 3 956 1.449 4 957 0.848 4 958 0.688 4 959 0.592 4 960 0.442 4 961 0.725 4 962 1.375 4 963 1.415 4 964 1.179 4 965 0.948 4 966 1.297 4 967 0.872 4 968 0.499 4 969 1.03 4 970 1.01 4 971 1.409 4 972 2.048 4 973 1.47 4 974 0.845 4 975 0.563 4 976 0.479 4 977 1.155 4 978 1.389 4 979 0.727 4 980 0.216 4 981 0.616 4 982 0.582 4 983 0.922 4 984 0.99 5 985 0.996 5 986 1.673 5 987 1.316 5 988 0.115 5 989 1.121 5 990 0.251 5 991 0.786 5 992 1.63 5 993 1.075 5 994 0.967 5 995 0.729 5 996 0.904 5 997 0.689 5 998 0.723 5 999 0.384 5 1000 0.766 5 1001 0.878 5 1002 0.873 5 1003 0.722 5 1004 0.793 5 1005 0.838 5 1006 1.031 5 1007 1.378 5 1008 0.524 5 1009 0.545 5 1010 1.128 5 1011 1.293 5 1012 0.873 5 1013 1.166 5 1014 0.925 5 1015 0.746 5 1016 1.276 5 1017 1.051 5 1018 1.005 5 1019 1.216 5 1020 0.971 5 1021 1.025 5 1022 1.082 5 1023 0.288 5 1024 1.039 5 1025 0.604 5 1026 0.668 5 1027 0.759 5 1028 1.083 5 1029 0.925 5 1030 0.942 5 1031 1.491 5 1032 0.88 5 1033 1.055 5 1034 0.631 5 1035 0.947 6 1036 1.171 6 1037 1.039 6 1038 1.096 6 1039 0.861 6 1040 0.756 6 1041 0.43 6 1042 1.091 6 1043 0.599 6 1044 0.825 6 1045 0.722 6 1046 0.789 6 1047 0.831 6 1048 1.002 6 1049 0.672 6 1050 1.017 6 1051 0.842 6 1052 1.026 6 1053 0.998 6 1054 0.836 7 1055 0.579 7 1056 1.12 7 1057 1.097 7 1058 0.704 7 1059 1.07 7 1060 0.716 9 1061 0.885 9 1062 1.23 9 1063 0.658 9 1064 0.62 9 1065 1.172 9 1066 1.275 9 1067 0.764 9 1068 0.68 9 1069 0.979 9 1070 1.044 9 1071 0.789 9 1072 1.04 9 1073 1.078 9 1074 1.041 9 1075 1.791 9 1076 0.725 9 1077 0.956 9 1078 1.182 9 1079 1.601 9 1080 1.192 9 1081 0.589 9 1082 0.824 9 1083 0.774 9 1084 1.335 9 1085 0.955 9 1086 1.933 9 1087 1.712 9 1088 1.577 9 1089 1.269 9 1090 1.787 9 1091 1.987 9 1092 0.706 9 1093 1.026 9 1094 0.2 9 1095 2.143 9 1096 1.176 9 1097 0.475 9 1098 1.218 9 1099 1.072 9 1100 1.304 9 1101 1.515 9 1102 1.006 9 1103 1.238 9 1104 0.803 11 1105 0.783 11 1106 0.846 11 1107 1.391 11 1108 0.922 11 1109 0.726 11 1110 0.977 11 1111 1.283 11 1112 0.872 11 1113 1.039 11 1114 1.193 11 1115 0.836 11 1116 0.741 11 1117 1.269 11 1118 0.909 11 1119 1.26 11 1120 1.063 11 1121 1.855 11 1122 1.589 11 1123 0.638 11 1124 1.126 11 1125 0.627 11 1126 0.509 11 1127 1.184 11 1128 1.006 11 1129 0.608 11 1130 1.025 11 1131 1.3 11 1132 1.015 11 1133 1.501 11 1134 0.669 11 1135 0.8 11 1136 0.693 11 1137 1.378 11 1138 1.14 11 1139 1.134 11 1140 1.255 11 1141 1.141 11 1142 0.49 11 1143 1.04 11 1144 0.506 11 1145 1.057 11 1146 1.04 11 1147 0.943 11 1148 0.929 11 1149 0.59 11 1150 1.05 11 1151 1.036 11 1152 1.111 11 1153 0.865 11 1154 1.059 11 1155 0.603 11 1156 1.735 11 1157 1.18 11 1158 1.343 11 1159 0.49 11 1160 1.206 11 1161 1.167 11 1162 0.854 11 1163 1.12 11 1164 1.096 11 1165 0.714 11 1166 0.887 11 1167 1.001 11 1168 1.104 11 1169 0.832 11 1170 0.647 11 1171 0.939 11 1172 0.878 11 1173 0.837 11 1174 0.712 11 1175 0.997 11 1176 0.784 11 1177 0.877 11 1178 0.699 11 1179 0.788 11 1180 0.931 11 1181 0.807 13 1182 0.669 13 1183 1.035 13 1184 1.022 13 1185 0.781 13 1186 1.191 13 1187 0.834 13 1188 1.088 13 1189 1.088 13 1190 1.086 13 1191 0.693 13 1192 0.801 13 1193 0.977 13 1194 0.675 14 1195 0.886 14 1196 1.27 14 1197 0.853 14 1198 0.752 14 1199 1.036 14 1200 0.97 14 1201 1.435 14 1202 1.283 14 1203 0.884 14 1204 1.12 14 1205 1.113 14 1206 0.902 14 1207 1.056 14 1208 0.5 14 1209 0.719 14 1210 0.779 15 1211 0.425 15 1212 1.011 16 1213 1.202 16 1214 0.908 16 1215 0.798 16 1216 1.62 16 1217 1 16 1218 1.036 16 1219 1.207 16 1220 0.667 16 1221 0.684 17 1222 1.128 17 1223 0.722 17 1224 1.656 17 1225 1.17 18 1226 0.733 18 1227 0.867 21 1228 2.262 21 1229 1.541 21 1230 0.881 21 1231 0.556 21 1232 1.19 22 1233 0.88 22 1234 1.001 22 1235 1.175 22 1236 0.38 22 1237 0.789 22 1238 0.791 22 1239 1.567 22 1240 0.571 22 1241 0.915 22 1242 0.93 22 1243 1.421 22 1244 1.097 22 1245 0.672 22 1246 1.443 22 1247 0.599 22 1248 1.182 23 1249 1.24 23 1250 0.638 23 1251 0.842 24 1252 1.003 24 1253 0.872 25 1254 0.809 25 1255 0.876 25 1256 1.118 25 1257 0.728 25 1258 1.106 25 1259 0.626 26 1260 0.789 27 1261 1.077 27 1262 1.034 27 1263 0.688 27 1264 1.299 27 1265 0.927 27 1266 1.031 27 1267 0.86 27 1268 0.839 27 1269 0.859 27 1270 0.604 27 1271 0.947 27 1272 1.15 27 1273 0.846 27 1274 1.091 27 1275 0.69 27 1276 0.883 29 1277 1.001 29 1278 1.309 29 1279 1.281 29 1280 1.734 29 1281 1.373 29 1282 1.467 29 1283 0.52 29 1284 0.734 29 1285 0.999 29 1286 1.717 29 1287 0.566 29 1288 1.103 29 1289 1.285 29 1290 1.218 29 1291 1.65 29 1292 0.839 29 1293 0.851 29 1294 0.836 29 1295 1.324 30 1296 0.245 30 1297 1.267 30 1298 1.212 30 1299 1.267 30 1300 1.227 30 1301 0.955 30 1302 0.844 30 1303 1.071 30 1304 1.587 32 1305 1.229 32 1306 0.741 32 1307 0.788 32 1308 0.976 32 1309 0.922 33 1310 0.772 33 1311 0.914 33 1312 0.676 33 1313 1.284 33 1314 1.221 33 1315 1.035 34 1316 1.642 34 1317 1.175 34 1318 0.416 34 1319 0.8 34 1320 1.049 34 1321 1.048 34 1322 0.9 34 1323 0.72 33 1324 0.463 33 1325 1.232 33 1326 1.398 33 1327 1.213 33 1328 1.395 33 1329 0.957 33 1330 1.036 33 1331 1.485 33 1332 0.882 33 1333 0.91 33 1334 1.412 33 1335 0.408 33 1336 0.613 33 1337 0.645 33 1338 1.824 33 1339 2.023 33 1340 1.485 33 1341 1.306 29 1342 0.816 29 1343 0.9 29 1344 0.854 30 1345 1.057 30 1346 1.083 30 1347 0.394 30 1348 0.658 30 1349 1.193 30 1350 1.303 30 1351 0.529 30 1352 0.936 30 1353 1.109 30 1354 0.789 30 1355 1.069 30 1356 0.667 29 1357 0.883 29 1358 1.133 29 1359 1.083 29 1360 0.761 29 1361 1.281 29 1362 1.216 29 1363 1.376 29 1364 0.62 29 1365 0.966 29 1366 1.698 29 1367 0.508 29 1368 0.477 30 1369 1.015 30 1370 1.121 30 1371 0.965 30 1372 0.468 30 1373 1.155 30 1374 1.865 32 1375 1.068 32 1376 0.861 32 1377 2.039 32 1378 0.714 32 1379 1.039 32 1380 0.814 32 1381 1.418 32 1382 0.948 32 1383 1.676 32 1384 0.472 32 1385 1.219 32 1386 1.155 32 1387 0.743 32 1388 1.018 32 1389 0.541 32 1390 1.397 32 1391 0.845 32 1392 0.698 32 1393 0.973 32 1394 0.88 32 1395 0.962 32 1396 1.084 32 1397 0.927 32 1398 0.919 32 1399 0.756 32 1400 0.863 32 1401 0.401 30 1402 1.253 30 1403 1.171 30 1404 1.043 30 1405 1.003 30 1406 0.757 30 1407 1.03 30 1408 0.664 30 1409 0.746 30 1410 1.1 30 1411 0.797 30 1412 0.812 30 1413 0.904 30 1414 1.033 30 1415 1.299 30 1416 0.282 30 1417 0.993 30 1418 0.99 30 1419 0.76 30 1420 0.973 31 1421 0.753 31 1422 1.773 31 1423 1.279 31 1424 1.94 32 1425 0.294 32 1426 0.448 32 1427 0.742 32 1428 1.529 32 1429 1.702 32 1430 1.163 32 1431 0.486 32 1432 1.49 31 1433 0.843 31 1434 1.107 31 1435 1.199 31 1436 0.786 31 1437 1.6 31 1438 0.766 31 1439 0.826 31 1440 1.503 31 1441 0.896 32 1442 0.746 32 1443 1.548 32 1444 1.112 32 1445 0.955 32 1446 0.906 32 1447 0.911 33 1448 0.933 33 1449 1.105 33 1450 1.072 33 1451 0.708 33 1452 0.931 33 1453 0.59 32 1454 0.919 33 1455 0.497 33 1456 1.07 35 1457 1.905 35 1458 1.05 35 1459 1.58 36 1460 1.133 36 1461 0.781 36 1462 0.788 36 1463 0.935 37 1464 0.797 37 1465 1.048 38 1466 0.962 38 1467 0.958 38 1468 0.903 38 1469 0.943 38 1470 1.016 38 1471 0.836 38 1472 0.597 38 1473 1.008 38 1474 0.783 38 1475 1.321 38 1476 1.348 38 1477 1.443 38 1478 1.074 38 1479 0.776 38 1480 1.16 38 1481 1.006 38 1482 1.178 38 1483 0.944 38 1484 1.193 38 1485 1.15 37 1486 0.414 37 1487 1.305 37 1488 1.174 37 1489 0.935 37 1490 0.585 37 1491 0.779 37 1492 1.197 37 1493 1.548 37 1494 0.891 37 1495 1.023 37 1496 0.883 37 1497 0.851 37 1498 1.091 37 1499 0.941 37 1500 0.957 37 1501 0.657 36 1502 1.057 36 1503 1.108 36 1504 0.812 37 1505 0.635 37 1506 1.215 37 1507 1.374 37 1508 1.38 37 1509 0.594 37 1510 1.532 37 1511 1.008 37 1512 0.887 37 1513 1.192 37 1514 1.046 37 1515 0.945 37 1516 1.245 37 1517 0.988 37 1518 0.726 37 1519 0.943 37 1520 0.531 36 1521 0.838 36 1522 1.033 36 1523 1.128 36 1524 1.606 36 1525 0.616 34 1526 0.742 34 1527 1.098 34 1528 1.554 34 1529 1.126 34 1530 1.317 34 1531 0.838 34 1532 1.301 34 1533 0.579 34 1534 0.678 34 1535 0.676 34 1536 1.03 36 1537 1.075 36 1538 0.754 36 1539 0.85 36 1540 1.211 36 1541 1.612 36 1542 0.957 36 1543 1.633 36 1544 0.827 36 1545 0.922 36 1546 0.898 36 1547 0.784 36 1548 1.007 36 1549 1.043 36 1550 0.971 36 1551 0.731 35 1552 0.696 35 1553 1.518 35 1554 1.303 35 1555 0.865 35 1556 1.32 35 1557 0.96 33 1558 0.83 33 1559 0.949 33 1560 0.927 33 1561 1.511 33 1562 0.703 33 1563 0.831 33 1564 1.205 33 1565 0.841 34 1566 0.556 34 1567 1.005 34 1568 0.748 34 1569 1.119 34 1570 1.255 34 1571 0.92 33 1572 0.697 33 1573 1.135 33 1574 0.93 33 1575 1.05 34 1576 1.465 34 1577 1.509 34 1578 1.032 34 1579 1.266 34 1580 0.762 34 1581 1.014 34 1582 0.726 35 1583 1.29 35 1584 1.188 35 1585 1.328 35 1586 0.43 35 1587 0.316 35 1588 0.792 35 1589 0.88 35 1590 1.491 35 1591 0.922 35 1592 0.908 35 1593 1.034 35 1594 1.246 35 1595 0.881 35 1596 0.844 36 1597 0.77 36 1598 0.93 36 1599 0.764 36 1600 1.504 36 1601 1.305 36 1602 1.315 36 1603 1.125 35 1604 0.995 37 1605 1.446 37 1606 0.471 37 1607 0.83 37 1608 0.711 37 1609 0.888 37 1610 0.781 37 1611 1.233 37 1612 1.133 37 1613 1.424 37 1614 0.844 38 1615 1.015 38 1616 0.68 39 1617 1.326 39 1618 0.749 39 1619 0.99 39 1620 0.647 39 1621 0.79 39 1622 1.309 39 1623 0.857 39 1624 0.955 38 1625 0.747 38 1626 1.208 38 1627 0.703 39 1628 0.843 39 1629 1.087 39 1630 0.885 39 1631 0.821 39 1632 0.832 39 1633 0.859 39 1634 0.811 39 1635 1.07 39 1636 0.967 39 1637 0.64 39 1638 0.601 39 1639 1.599 39 1640 1.184 39 1641 1.089 39 1642 1.296 39 1643 0.942 42 1644 0.793 42 1645 1.422 42 1646 0.826 42 1647 1.077 42 1648 0.642 42 1649 1.268 42 1650 0.611 42 1651 0.946 42 1652 0.963 42 1653 0.734 42 1654 0.919 43 1655 1.215 43 1656 1.324 43 1657 0.846 43 1658 1.144 43 1659 0.93 43 1660 0.649 43 1661 0.965 43 1662 0.978 43 1663 0.825 43 1664 0.99 43 1665 1.11 43 1666 0.749 43 1667 1.119 42 1668 0.996 42 1669 1.159 42 1670 0.589 42 1671 1.072 42 1672 0.73 42 1673 1.142 42 1674 0.774 42 1675 0.975 42 1676 0.451 42 1677 1.223 42 1678 0.956 42 1679 0.795 42 1680 1.673 42 1681 1.3 42 1682 0.914 42 1683 1.083 42 1684 2.137 43 1685 0.372 43 1686 0.852 43 1687 0.793 43 1688 0.855 43 1689 1.286 43 1690 1.346 43 1691 0.554 43 1692 1.162 43 1693 1.062 43 1694 0.872 43 1695 1.123 43 1696 0.95 43 1697 1.147 43 1698 0.881 43 1699 0.434 43 1700 1.178 43 1701 1.313 43 1702 1.509 43 1703 0.506 43 1704 1.152 43 1705 0.748 43 1706 0.857 43 1707 0.736 43 1708 0.662 43 1709 0.874 43 1710 1.025 43 1711 1.155 43 1712 1.071 43 1713 0.87 43 1714 0.624 43 1715 1.17 43 1716 1.563 43 1717 1.536 43 1718 0.951 43 1719 1.132 43 1720 0.923 43 1721 1.383 43 1722 0.925 43 1723 1.827 43 1724 1.674 43 1725 1.087 43 1726 0.392 43 1727 1.565 43 1728 0.723 44 1729 1.939 44 1730 0.983 44 1731 0.972 44 1732 1.435 44 1733 0.745 44 1734 1.386 46 1735 0.974 46 1736 1.162 46 1737 0.902 46 1738 0.705 46 1739 1.221 46 1740 1.2 46 1741 0.873 46 1742 0.938 46 1743 1.01 47 1744 1.227 47 1745 1.492 47 1746 1.11 47 1747 0.613 47 1748 0.777 47 1749 1.267 47 1750 0.99 47 1751 1.434 47 1752 1.022 47 1753 1.635 47 1754 1.194 47 1755 0.63 48 1756 0.822 48 1757 1.93 48 1758 0.945 48 1759 0.741 48 1760 2.132 48 1761 1.167 47 1762 0.701 47 1763 0.878 46 1764 0.772 46 1765 0.476 46 1766 1.391 45 1767 0.633 45 1768 1.279 45 1769 0.943 45 1770 1.246 45 1771 1.005 44 1772 0.655 44 1773 1.335 44 1774 1.047 44 1775 0.77 44 1776 1.085 43 1777 1.094 43 1778 1.305 43 1779 0.755 43 1780 0.483 43 1781 0.827 43 1782 1.014 43 1783 1.282 43 1784 1.201 43 1785 0.884 43 1786 1.403 42 1787 0.896 42 1788 0.997 42 1789 0.818 42 1790 1 42 1791 0.589 42 1792 0.804 42 1793 1.535 42 1794 0.748 42 1795 0.986 41 1796 1.66 41 1797 0.456 41 1798 1.221 41 1799 0.712 41 1800 1.267 41 1801 1.272 41 1802 0.932 41 1803 0.783 41 1804 0.897 41 1805 0.593 41 1806 0.586 41 1807 1.086 41 1808 0.855 41 1809 0.789 41 1810 1.019 41 1811 0.612 39 1812 1.162 39 1813 0.88 39 1814 1.125 39 1815 0.917 39 1816 0.959 39 1817 1.683 39 1818 0.992 39 1819 0.78 39 1820 0.721 39 1821 0.901 39 1822 0.664 39 1823 1.108 39 1824 1.21 39 1825 1.007 39 1826 0.778 39 1827 1.235 39 1828 1.374 39 1829 1.148 39 1830 0.703 39 1831 0.938 39 1832 0.905 39 1833 1.019 39 1834 1.118 39 1835 0.968 39 1836 0.837 39 1837 0.423 39 1838 0.913 39 1839 1.355 39 1840 1.32 39 1841 0.744 39 1842 1.45 39 1843 0.974 39 1844 0.747 39 1845 0.68 38 1846 1.329 38 1847 0.789 38 1848 0.673 38 1849 0.679 38 1850 0.953 38 1851 1.129 38 1852 0.633 38 1853 1.344 38 1854 0.997 38 1855 1.198 38 1856 0.46 38 1857 0.595 38 1858 0.751 38 1859 1.11 38 1860 1.096 38 1861 1.083 38 1862 1.198 38 1863 1.33 38 1864 0.334 38 1865 1.063 38 1866 0.78 38 1867 1.556 38 1868 1.213 37 1869 0.745 37 1870 1.446 37 1871 0.913 37 1872 1.174 37 1873 1.197 37 1874 1.195 37 1875 0.849 37 1876 1.016 37 1877 1.375 37 1878 0.861 37 1879 0.76 37 1880 0.708 37 1881 1.088 37 1882 1.105 37 1883 1.14 37 1884 1.574 37 1885 0.932 37 1886 1.803 36 1887 0.41 36 1888 1.083 36 1889 1.72 36 1890 1.023 36 1891 1.095 36 1892 1.248 36 1893 0.641 36 1894 0.941 36 1895 0.905 36 1896 1.423 35 1897 0.61 35 1898 1.292 35 1899 1.042 35 1900 0.53 35 1901 0.968 35 1902 0.784 35 1903 1.939 35 1904 0.795 35 1905 1.147 35 1906 1.14 35 1907 1.105 35 1908 1.075 35 1909 0.937 35 1910 1.127 35 1911 0.52 35 1912 0.649 35 1913 1.299 35 1914 1.167 35 1915 0.876 35 1916 0.788 35 1917 1.227 35 1918 0.836 35 1919 1.105 35 1920 0.853 35 1921 0.8 35 1922 1.301 34 1923 0.581 34 1924 1.1 34 1925 0.724 34 1926 1.264 34 1927 1.38 34 1928 0.975 34 1929 1.185 34 1930 0.865 34 1931 0.447 34 1932 0.806 34 1933 1.215 34 1934 1.275 34 1935 1.118 33 1936 0.92 33 1937 1.105 33 1938 1.403 33 1939 0.902 33 1940 0.607 33 1941 0.865 33 1942 0.635 33 1943 1.009 33 1944 0.599 33 1945 1.35 32 1946 1.417 32 1947 0.851 32 1948 0.787 32 1949 0.98 32 1950 1.136 32 1951 0.81 32 1952 0.652 32 1953 0.941 32 1954 1.304 32 1955 1.071 32 1956 1.185 32 1957 0.866 32 1958 1.174 32 1959 0.738 32 1960 1.019 32 1961 0.81 32 1962 1.261 32 1963 0.911 32 1964 0.912 32 1965 1.101 32 1966 0.726 32 1967 1.254 32 1968 1.24 32 1969 1.361 32 1970 0.9 32 1971 0.92 32 1972 0.849 32 1973 1.315 32 1974 1.143 32 1975 1.4 32 1976 0.731 32 1977 0.511 32 1978 1.552 32 1979 0.909 32 1980 0.669 32 1981 0.949 32 1982 1.204 32 1983 0.936 31 1984 1.405 31 1985 0.959 31