ISEA Grid Resolutions 0-27


Resolution Hexagon Area (sq. km) Number of Grid Cells 1 CLS (km.) 2
0 N/A 1 12 N/A 2
1 17,040,633.94270 32 4,684.25709
2 5,680,211.31423 92 2,694.29318
3 1,893,403.77141 272 1,553.62115
4 631,134.59047 812 896.61387
5 210,378.19682 2,432 517.58921
6 70,126.06561 7,292 298.81660
7 23,375.35520 21,872 172.51922
8 7,791.78507 65,612 99.60351
9 2,597.26169 196,832 57.50602
10 865.75390 590,492 33.20110
11 288.58463 1,771,472 19.16866
12 96.19488 5,314,412 11.06703
13 32.06496 15,943,232 6.38955
14 10.68832 47,829,692 3.68901
15 3.56277 143,489,072 2.12985
16 1.18759 430,467,212 1.22967
17 0.39586 1,291,401,632 0.70995
18 0.13195 3,874,204,892 0.40989
19 0.04398 11,622,614,672 0.23665
20 0.01466 34,867,844,012 0.13663
21 0.00489 104,603,532,032 0.07888
22 0.00163 313,810,596,092 0.04554
23 0.00054 941,431,788,272 0.02629
24 0.00018 2,824,295,364,812 0.01518
25 0.00006 8,472,886,094,432 0.00876
26 0.00002 25,418,658,283,292 0.00506
27 0.00001 76,255,974,849,872 0.00292


Notes:

1 At every resolution 12 of the cells are pentagons and the remainder are hexagons.
2 Characteristic Length Scale (CLS): the diameter of a spherical cap of the same area as a hexagon of the specified resolution.