Area  Ecosystem  lon_W  lon_E  lat_S  lat_N  num_pixels  min_gvf              max_gvf  mean_gvf std_gvf
 E-Sahara(LYBIA)            desert   23.0   24.0   28.0   29.0    12544   1.0   4.0                        2.0   0.6
   Colorado(USA)            steppe -103.0 -102.0   36.0   37.0    12656   1.0  79.0                       11.8   7.8
   Illinois(USA)             crops  -89.0  -88.0   39.0   40.0    12539   1.0  67.0                        6.7   6.9
   Kentucky(USA) broad_leaf_forest  -85.0  -84.0   36.0   37.0    12643   1.0  56.0                       16.7   5.6
     Oregon(USA) coniferous_forest -123.0 -122.0   43.0   44.0    12616   1.0 100.0                       39.0  21.5