Station Latitude Longitude Altitude (m) Ilam 33° 38’ 46° 26’ 1337 Khorramabad 33° 26’ 48° 17’ 1147.8 Zanjan 36° 41’ 48° 29’ 1663 Sanandaj 35° 20’ 47° 00’ 1373.4 Kermanshah 34° 21’ 47° 09’ 1318.6 Hamedan 34° 52’ 48° 32’ 1741.5

Table 2: Geographical coordinates of the studied stations.