Region Population code Latitude(°N) Longitude (°E) Annual mean temperature (°C) Annual mean precipitation (mm) Aridity index
Eastern region E1 48.82 119.23 -0.93 324 0.32
E2 48.55 119.12 -1.25 319 0.31
E3 48.46 119.04 -1.09 309 0.30
Middle region M1 43.63 116.68 1.71 317 0.27
M2 43.60 116.66 1.80 314 0.26
M3 43.82 116.52 1.93 297 0.24
Western region W1 43.94 115.86 2.38 263 0.20
W2 43.91 115.30 1.73 245 0.19
W3 43.98 115.14 1.46 239 0.18