Cumulus Average Base Height (meters) December, January, February (1971 - 1996) Night, Land Areas Only Global Average: 888 Zonal Averages 31 zones Lat.N Average 77.5 632 72.5 853 67.5 905 62.5 1100 57.5 930 52.5 931 47.5 877 42.5 997 37.5 955 32.5 1247 27.5 1214 22.5 1161 17.5 726 12.5 707 7.5 649 2.5 694 -2.5 654 -7.5 731 -12.5 886 -17.5 978 -22.5 1167 -27.5 1481 -32.5 1245 -37.5 1078 -42.5 1107 -47.5 1081 -52.5 797 -62.5 688 -67.5 808 -72.5 734 -77.5 759 Grid Box Averages 622 boxes filled with min 30 obs. Box # Lat.N Lon.E Average N.Obs. 12 77.5 30.0 632 132 29 72.5 10.0 837 252 30 72.5 30.0 888 954 31 72.5 50.0 606 90 32 72.5 70.0 1370 32 46 72.5 -10.0 665 113 48 67.5 15.0 875 2192 49 67.5 25.0 910 439 50 67.5 35.0 802 356 51 67.5 45.0 724 414 52 67.5 55.0 977 118 53 67.5 65.0 1136 96 55 67.5 85.0 1692 39 77 67.5 -55.0 974 155 80 67.5 -25.0 886 597 81 67.5 -15.0 942 633 83 62.5 5.0 1140 1446 84 62.5 15.0 1139 307 85 62.5 25.0 958 516 86 62.5 35.0 1045 143 87 62.5 45.0 1076 94 88 62.5 55.0 1328 73 89 62.5 65.0 1565 56 90 62.5 75.0 1577 64 91 62.5 85.0 1708 58 92 62.5 95.0 1810 75 99 62.5 165.0 976 72 106 62.5 -125.0 1281 40 107 62.5 -115.0 1098 82 113 62.5 -55.0 779 197 114 62.5 -45.0 928 113 116 62.5 -25.0 703 847 117 62.5 -15.0 1038 410 118 62.5 -5.0 570 1313 119 57.5 5.0 822 1459 120 57.5 15.0 661 2211 121 57.5 25.0 714 938 122 57.5 35.0 1028 176 123 57.5 45.0 1070 135 124 57.5 55.0 1375 101 125 57.5 65.0 1413 139 126 57.5 75.0 1568 131 127 57.5 85.0 1173 294 128 57.5 95.0 1340 256 129 57.5 105.0 1568 98 130 57.5 115.0 1713 115 131 57.5 125.0 1957 38 134 57.5 155.0 973 53 135 57.5 165.0 845 44 137 57.5 -175.0 584 51 139 57.5 -155.0 960 59 141 57.5 -135.0 814 49 142 57.5 -125.0 972 56 143 57.5 -115.0 1225 57 144 57.5 -105.0 619 50 154 57.5 -5.0 706 2986 155 52.5 5.0 638 4578 156 52.5 15.0 661 3708 157 52.5 25.0 780 228 158 52.5 35.0 856 211 159 52.5 45.0 963 87 160 52.5 55.0 1479 72 161 52.5 65.0 1521 112 162 52.5 75.0 1276 217 163 52.5 85.0 1492 329 164 52.5 95.0 1623 151 165 52.5 105.0 1245 498 166 52.5 115.0 1406 361 167 52.5 125.0 1845 74 168 52.5 135.0 1644 108 169 52.5 145.0 984 308 170 52.5 155.0 969 250 173 52.5 -175.0 816 101 177 52.5 -135.0 659 510 178 52.5 -125.0 971 602 179 52.5 -115.0 1384 174 180 52.5 -105.0 913 58 184 52.5 -65.0 970 96 185 52.5 -55.0 747 102 189 52.5 -15.0 762 485 190 52.5 -5.0 708 6263 191 47.5 2.5 740 820 192 47.5 7.5 677 810 193 47.5 12.5 1075 1467 194 47.5 17.5 987 993 195 47.5 22.5 968 264 196 47.5 27.5 1022 162 197 47.5 32.5 1070 193 198 47.5 37.5 1016 193 199 47.5 42.5 926 159 200 47.5 47.5 1191 64 201 47.5 52.5 1156 52 202 47.5 57.5 1409 50 203 47.5 62.5 1445 68 204 47.5 67.5 1500 65 205 47.5 72.5 1008 136 206 47.5 77.5 1247 65 207 47.5 82.5 1702 48 208 47.5 87.5 1294 124 209 47.5 92.5 1176 50 211 47.5 102.5 1429 83 212 47.5 107.5 1554 40 213 47.5 112.5 1705 32 215 47.5 122.5 904 50 216 47.5 127.5 1235 33 217 47.5 132.5 1417 59 218 47.5 137.5 1127 535 219 47.5 142.5 949 809 220 47.5 147.5 962 77 221 47.5 152.5 1010 324 238 47.5 -122.5 755 371 239 47.5 -117.5 1030 181 244 47.5 -92.5 875 40 246 47.5 -82.5 810 47 247 47.5 -77.5 833 55 248 47.5 -72.5 676 75 249 47.5 -67.5 746 119 250 47.5 -62.5 781 32 251 47.5 -57.5 625 1085 252 47.5 -52.5 732 569 261 47.5 -7.5 774 490 262 47.5 -2.5 771 2321 263 42.5 2.5 956 835 264 42.5 7.5 792 3792 265 42.5 12.5 749 3041 266 42.5 17.5 801 1555 267 42.5 22.5 1206 367 268 42.5 27.5 1081 1732 269 42.5 32.5 1020 949 270 42.5 37.5 1166 922 271 42.5 42.5 962 874 272 42.5 47.5 658 724 273 42.5 52.5 989 82 274 42.5 57.5 1334 63 275 42.5 62.5 1007 118 276 42.5 67.5 1009 147 277 42.5 72.5 1099 175 278 42.5 77.5 1217 266 279 42.5 82.5 1383 97 280 42.5 87.5 1334 91 281 42.5 92.5 1616 326 285 42.5 112.5 1044 122 286 42.5 117.5 1161 340 287 42.5 122.5 1096 67 288 42.5 127.5 940 198 289 42.5 132.5 1084 283 291 42.5 142.5 1067 231 292 42.5 147.5 954 368 310 42.5 -122.5 1039 64 312 42.5 -112.5 1261 44 318 42.5 -82.5 850 159 319 42.5 -77.5 670 69 320 42.5 -72.5 1386 114 321 42.5 -67.5 815 192 322 42.5 -62.5 799 80 333 42.5 -7.5 687 1229 334 42.5 -2.5 805 697 335 37.5 2.5 830 1493 336 37.5 7.5 899 8577 337 37.5 12.5 730 5908 338 37.5 17.5 773 3591 339 37.5 22.5 836 8742 340 37.5 27.5 896 6421 341 37.5 32.5 1096 1307 342 37.5 37.5 1137 1561 343 37.5 42.5 1071 211 344 37.5 47.5 987 279 345 37.5 52.5 967 239 346 37.5 57.5 1089 124 347 37.5 62.5 1244 42 348 37.5 67.5 1052 228 349 37.5 72.5 1568 101 350 37.5 77.5 1887 51 353 37.5 92.5 1577 32 354 37.5 97.5 1175 441 355 37.5 102.5 1125 314 356 37.5 107.5 1492 98 357 37.5 112.5 700 376 358 37.5 117.5 1144 62 359 37.5 122.5 859 663 360 37.5 127.5 1088 189 361 37.5 132.5 857 94 362 37.5 137.5 944 976 363 37.5 142.5 1236 576 382 37.5 -122.5 845 43 383 37.5 -117.5 1855 31 384 37.5 -112.5 1178 60 388 37.5 -92.5 915 31 390 37.5 -82.5 812 37 391 37.5 -77.5 1031 109 400 37.5 -32.5 704 209 401 37.5 -27.5 684 765 405 37.5 -7.5 665 2521 406 37.5 -2.5 814 1411 407 32.5 2.5 1282 1244 408 32.5 7.5 1394 2547 409 32.5 12.5 842 1249 410 32.5 17.5 846 229 411 32.5 22.5 911 150 412 32.5 27.5 799 167 413 32.5 32.5 901 1756 414 32.5 37.5 877 1960 416 32.5 47.5 1293 69 421 32.5 72.5 1430 86 423 32.5 82.5 1797 619 424 32.5 87.5 1988 201 425 32.5 92.5 1913 216 426 32.5 97.5 1595 1762 427 32.5 102.5 1397 737 428 32.5 107.5 1267 90 429 32.5 112.5 1101 136 430 32.5 117.5 884 94 431 32.5 122.5 691 683 432 32.5 127.5 888 624 433 32.5 132.5 1079 239 434 32.5 137.5 962 1896 455 32.5 -117.5 828 46 456 32.5 -112.5 1335 42 457 32.5 -107.5 1194 42 462 32.5 -82.5 969 103 466 32.5 -62.5 744 852 475 32.5 -17.5 685 1928 477 32.5 -7.5 748 2702 478 32.5 -2.5 1022 1598 479 27.5 2.5 1823 246 480 27.5 7.5 1633 147 484 27.5 27.5 800 38 485 27.5 32.5 1010 175 486 27.5 37.5 914 187 487 27.5 42.5 1289 43 489 27.5 52.5 1005 55 490 27.5 57.5 1012 42 491 27.5 62.5 1174 69 494 27.5 77.5 1190 95 495 27.5 82.5 990 57 496 27.5 87.5 1399 628 497 27.5 92.5 1540 698 498 27.5 97.5 1126 1944 499 27.5 102.5 1284 3511 500 27.5 107.5 887 356 501 27.5 112.5 900 236 502 27.5 117.5 899 245 503 27.5 122.5 641 1400 507 27.5 142.5 574 82 515 27.5 -177.5 769 530 527 27.5 -117.5 661 55 528 27.5 -112.5 737 35 529 27.5 -107.5 787 195 530 27.5 -102.5 905 57 531 27.5 -97.5 928 43 534 27.5 -82.5 840 704 535 27.5 -77.5 644 1827 547 27.5 -17.5 515 31 548 27.5 -12.5 697 118 549 27.5 -7.5 1682 32 550 27.5 -2.5 1788 80 552 22.5 7.5 1895 314 555 22.5 22.5 1408 34 558 22.5 37.5 1387 108 559 22.5 42.5 920 102 562 22.5 57.5 1091 198 565 22.5 72.5 991 44 566 22.5 77.5 1031 149 567 22.5 82.5 1195 51 568 22.5 87.5 1156 123 569 22.5 92.5 803 419 570 22.5 97.5 1077 1265 571 22.5 102.5 1221 2663 572 22.5 107.5 774 1275 573 22.5 112.5 608 1554 574 22.5 117.5 653 2603 575 22.5 122.5 719 4275 581 22.5 152.5 810 176 591 22.5 -157.5 771 700 601 22.5 -107.5 930 59 602 22.5 -102.5 780 277 603 22.5 -97.5 797 214 605 22.5 -87.5 638 306 606 22.5 -82.5 702 2820 607 22.5 -77.5 717 1480 608 22.5 -72.5 569 1813 619 22.5 -17.5 685 41 630 17.5 37.5 634 44 631 17.5 42.5 912 442 637 17.5 72.5 1044 69 638 17.5 77.5 1088 105 639 17.5 82.5 882 237 641 17.5 92.5 897 66 642 17.5 97.5 885 1251 643 17.5 102.5 885 1289 644 17.5 107.5 745 1831 645 17.5 112.5 760 3702 646 17.5 117.5 513 616 647 17.5 122.5 659 6900 656 17.5 167.5 675 630 663 17.5 -157.5 672 125 672 17.5 -112.5 912 350 674 17.5 -102.5 621 153 675 17.5 -97.5 708 713 676 17.5 -92.5 632 733 677 17.5 -87.5 722 3668 678 17.5 -82.5 744 1070 679 17.5 -77.5 840 2549 680 17.5 -72.5 639 1534 681 17.5 -67.5 735 5405 682 17.5 -62.5 757 1789 690 17.5 -22.5 506 372 702 12.5 37.5 826 186 703 12.5 42.5 797 529 709 12.5 72.5 814 106 710 12.5 77.5 826 549 711 12.5 82.5 810 275 713 12.5 92.5 777 807 714 12.5 97.5 816 2242 715 12.5 102.5 819 3258 716 12.5 107.5 659 757 719 12.5 122.5 604 19924 720 12.5 127.5 497 1753 723 12.5 142.5 488 2328 748 12.5 -92.5 1137 58 749 12.5 -87.5 770 2028 750 12.5 -82.5 775 2072 751 12.5 -77.5 814 92 752 12.5 -72.5 528 1685 753 12.5 -67.5 495 2725 754 12.5 -62.5 712 4281 755 12.5 -57.5 703 965 767 7.5 2.5 585 814 768 7.5 7.5 966 93 769 7.5 12.5 865 34 774 7.5 37.5 942 91 775 7.5 42.5 907 76 781 7.5 72.5 808 151 782 7.5 77.5 597 1433 783 7.5 82.5 493 2356 786 7.5 97.5 767 9298 787 7.5 102.5 739 4875 788 7.5 107.5 592 1240 790 7.5 117.5 686 1650 791 7.5 122.5 597 7631 792 7.5 127.5 538 2977 793 7.5 132.5 454 903 794 7.5 137.5 529 911 797 7.5 152.5 477 661 798 7.5 157.5 574 910 800 7.5 167.5 478 1292 801 7.5 172.5 453 853 822 7.5 -82.5 942 45 823 7.5 -77.5 688 673 824 7.5 -72.5 705 170 825 7.5 -67.5 810 61 826 7.5 -62.5 464 88 827 7.5 -57.5 551 606 828 7.5 -52.5 571 345 836 7.5 -12.5 592 56 837 7.5 -7.5 649 193 838 7.5 -2.5 525 674 840 2.5 7.5 693 802 841 2.5 12.5 797 678 845 2.5 32.5 1036 50 846 2.5 37.5 874 220 847 2.5 42.5 994 66 848 2.5 47.5 806 446 853 2.5 72.5 514 554 858 2.5 97.5 727 781 859 2.5 102.5 562 1312 860 2.5 107.5 552 202 861 2.5 112.5 504 647 862 2.5 117.5 682 521 863 2.5 122.5 731 86 864 2.5 127.5 650 951 873 2.5 172.5 642 2132 879 2.5 -157.5 642 703 895 2.5 -77.5 813 51 896 2.5 -72.5 904 53 898 2.5 -62.5 797 312 899 2.5 -57.5 809 79 900 2.5 -52.5 562 1562 909 2.5 -7.5 506 1371 912 -2.5 7.5 508 259 913 -2.5 12.5 673 1479 914 -2.5 17.5 640 314 916 -2.5 27.5 952 82 917 -2.5 32.5 701 140 918 -2.5 37.5 553 2332 919 -2.5 42.5 592 2479 922 -2.5 57.5 655 885 931 -2.5 102.5 587 1496 932 -2.5 107.5 686 1689 933 -2.5 112.5 658 349 934 -2.5 117.5 695 517 935 -2.5 122.5 670 652 936 -2.5 127.5 764 775 937 -2.5 132.5 596 405 938 -2.5 137.5 550 730 939 -2.5 142.5 458 211 940 -2.5 147.5 724 317 941 -2.5 152.5 667 103 946 -2.5 177.5 657 2173 966 -2.5 -82.5 756 428 967 -2.5 -77.5 846 194 968 -2.5 -72.5 698 142 969 -2.5 -67.5 584 114 970 -2.5 -62.5 646 118 971 -2.5 -57.5 799 94 972 -2.5 -52.5 600 366 973 -2.5 -47.5 718 309 974 -2.5 -42.5 504 551 975 -2.5 -37.5 751 1809 976 -2.5 -32.5 685 2582 985 -7.5 12.5 635 231 989 -7.5 32.5 848 95 990 -7.5 37.5 548 1966 997 -7.5 72.5 509 1346 1004 -7.5 107.5 733 1133 1005 -7.5 112.5 632 1164 1006 -7.5 117.5 700 1547 1007 -7.5 122.5 780 1435 1008 -7.5 127.5 781 130 1009 -7.5 132.5 783 870 1011 -7.5 142.5 470 165 1012 -7.5 147.5 643 344 1014 -7.5 157.5 558 486 1015 -7.5 162.5 556 429 1018 -7.5 177.5 619 4407 1020 -7.5 -172.5 875 992 1023 -7.5 -157.5 694 1441 1027 -7.5 -137.5 797 1995 1039 -7.5 -77.5 898 1654 1040 -7.5 -72.5 754 253 1041 -7.5 -67.5 842 88 1042 -7.5 -62.5 816 171 1043 -7.5 -57.5 713 94 1044 -7.5 -52.5 843 102 1045 -7.5 -47.5 888 363 1046 -7.5 -42.5 771 754 1047 -7.5 -37.5 777 6048 1048 -7.5 -32.5 781 3544 1052 -7.5 -12.5 621 427 1057 -12.5 12.5 644 170 1058 -12.5 17.5 802 91 1059 -12.5 22.5 1394 78 1060 -12.5 27.5 1263 190 1061 -12.5 32.5 1194 264 1062 -12.5 37.5 631 236 1063 -12.5 42.5 789 912 1064 -12.5 47.5 768 1147 1065 -12.5 52.5 801 154 1066 -12.5 57.5 763 603 1074 -12.5 97.5 644 1041 1079 -12.5 122.5 631 1125 1081 -12.5 132.5 655 1472 1082 -12.5 137.5 545 960 1083 -12.5 142.5 653 1971 1085 -12.5 152.5 732 111 1087 -12.5 162.5 578 211 1088 -12.5 167.5 759 983 1090 -12.5 177.5 685 2055 1091 -12.5 -177.5 496 1673 1092 -12.5 -172.5 776 2731 1093 -12.5 -167.5 627 2040 1094 -12.5 -162.5 649 1181 1097 -12.5 -147.5 712 732 1112 -12.5 -72.5 1321 346 1113 -12.5 -67.5 758 141 1114 -12.5 -62.5 631 321 1115 -12.5 -57.5 1517 48 1117 -12.5 -47.5 1061 300 1118 -12.5 -42.5 850 168 1119 -12.5 -37.5 788 3117 1129 -17.5 12.5 649 47 1130 -17.5 17.5 1611 367 1131 -17.5 22.5 1292 114 1132 -17.5 27.5 1329 160 1133 -17.5 32.5 806 1372 1134 -17.5 37.5 762 1015 1135 -17.5 42.5 785 1063 1136 -17.5 47.5 780 454 1137 -17.5 52.5 796 1094 1138 -17.5 57.5 768 803 1139 -17.5 62.5 743 740 1151 -17.5 122.5 836 365 1152 -17.5 127.5 1162 112 1153 -17.5 132.5 1681 296 1154 -17.5 137.5 866 435 1155 -17.5 142.5 1519 658 1156 -17.5 147.5 771 1305 1160 -17.5 167.5 772 4030 1162 -17.5 177.5 807 4874 1163 -17.5 -177.5 757 2848 1164 -17.5 -172.5 753 3690 1165 -17.5 -167.5 818 1117 1166 -17.5 -162.5 686 2330 1167 -17.5 -157.5 505 1037 1168 -17.5 -152.5 714 963 1169 -17.5 -147.5 787 785 1170 -17.5 -142.5 693 1737 1185 -17.5 -67.5 896 84 1186 -17.5 -62.5 556 308 1187 -17.5 -57.5 794 341 1188 -17.5 -52.5 1236 119 1189 -17.5 -47.5 815 996 1190 -17.5 -42.5 842 146 1191 -17.5 -37.5 796 1713 1197 -17.5 -7.5 449 154 1201 -22.5 12.5 330 71 1202 -22.5 17.5 1648 532 1203 -22.5 22.5 1165 109 1204 -22.5 27.5 1170 160 1205 -22.5 32.5 1565 204 1206 -22.5 37.5 790 775 1207 -22.5 42.5 780 1373 1208 -22.5 47.5 766 459 1210 -22.5 57.5 749 944 1221 -22.5 112.5 1477 311 1222 -22.5 117.5 1340 271 1225 -22.5 132.5 2034 179 1226 -22.5 137.5 1682 75 1227 -22.5 142.5 1229 875 1228 -22.5 147.5 935 2121 1229 -22.5 152.5 696 1722 1231 -22.5 162.5 793 268 1232 -22.5 167.5 795 3519 1235 -22.5 -177.5 705 1711 1239 -22.5 -157.5 726 3431 1241 -22.5 -147.5 723 872 1243 -22.5 -137.5 666 1803 1244 -22.5 -132.5 607 1458 1256 -22.5 -72.5 876 36 1257 -22.5 -67.5 1062 118 1258 -22.5 -62.5 877 81 1259 -22.5 -57.5 1060 31 1260 -22.5 -52.5 801 633 1261 -22.5 -47.5 900 617 1262 -22.5 -42.5 783 1013 1265 -22.5 -27.5 762 79 1274 -27.5 17.5 1271 744 1275 -27.5 22.5 1741 1234 1276 -27.5 27.5 1564 283 1277 -27.5 32.5 711 1772 1280 -27.5 47.5 780 405 1293 -27.5 112.5 1190 344 1294 -27.5 117.5 2042 167 1295 -27.5 122.5 1442 86 1296 -27.5 127.5 2083 237 1298 -27.5 137.5 1821 162 1299 -27.5 142.5 1778 672 1300 -27.5 147.5 1778 1177 1301 -27.5 152.5 815 621 1304 -27.5 167.5 645 1201 1307 -27.5 -177.5 651 811 1314 -27.5 -142.5 667 1128 1321 -27.5 -107.5 790 1610 1328 -27.5 -72.5 687 149 1329 -27.5 -67.5 1545 781 1330 -27.5 -62.5 1055 312 1331 -27.5 -57.5 1039 655 1332 -27.5 -52.5 887 522 1333 -27.5 -47.5 788 644 1346 -32.5 17.5 814 1168 1347 -32.5 22.5 1017 2724 1348 -32.5 27.5 1117 971 1349 -32.5 32.5 466 53 1366 -32.5 117.5 987 1159 1367 -32.5 122.5 1478 263 1368 -32.5 127.5 1650 71 1369 -32.5 132.5 942 222 1370 -32.5 137.5 1356 301 1371 -32.5 142.5 1794 153 1372 -32.5 147.5 1780 556 1373 -32.5 152.5 889 484 1377 -32.5 172.5 442 385 1399 -32.5 -77.5 915 816 1400 -32.5 -72.5 1368 231 1401 -32.5 -67.5 1331 3152 1402 -32.5 -62.5 1152 1069 1403 -32.5 -57.5 995 3284 1404 -32.5 -52.5 844 528 1430 -37.5 77.5 756 203 1442 -37.5 137.5 648 484 1443 -37.5 142.5 1011 1011 1444 -37.5 147.5 1416 944 1445 -37.5 152.5 750 476 1449 -37.5 172.5 790 805 1450 -37.5 177.5 894 659 1472 -37.5 -72.5 757 1118 1473 -37.5 -67.5 1438 602 1474 -37.5 -62.5 1017 1412 1475 -37.5 -57.5 990 542 1516 -42.5 147.5 1163 443 1520 -42.5 167.5 1363 34 1521 -42.5 172.5 891 1356 1522 -42.5 177.5 725 244 1523 -42.5 -177.5 594 273 1544 -42.5 -72.5 965 1028 1545 -42.5 -67.5 1315 719 1546 -42.5 -62.5 1195 295 1557 -42.5 -7.5 696 265 1566 -47.5 37.5 676 141 1569 -47.5 52.5 568 250 1573 -47.5 72.5 718 212 1592 -47.5 167.5 760 330 1593 -47.5 172.5 962 261 1616 -47.5 -72.5 1100 2241 1617 -47.5 -67.5 1158 318 1646 -52.5 155.0 518 435 1647 -52.5 165.0 556 744 1659 -52.5 -75.0 760 1642 1660 -52.5 -65.0 993 796 1661 -52.5 -55.0 849 151 1732 -62.5 -65.0 688 96 1733 -62.5 -55.0 683 156 1734 -62.5 -45.0 845 40 1745 -67.5 65.0 806 147 1746 -67.5 75.0 779 142 1750 -67.5 115.0 662 90 1753 -67.5 145.0 980 32 1768 -67.5 -65.0 1196 69 1775 -72.5 10.0 820 75 1792 -72.5 -10.0 589 66 1801 -77.5 170.0 941 106 1809 -77.5 -30.0 546 100