Elevation varies with each satellite, but it varies greatly on geographic location
As an example, I am in Minnesota. G11, IA6, G3 and IA5 (91, 93, 95 & 97 W) are basically at the same elevation. But for someone out in LA, the elevation goes up 1.2 degrees as you go up the scale because its true south (where its highest elevation) is much farther west than Minnesota (IA6 is my true south). For LA, Dish 121 and Galaxy 10 (123) are almost the same elevation