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   5.0                        2.0   0.6
   Colorado(USA)            steppe -103.0 -102.0   36.0   37.0    12656   1.0  95.0                       14.5  10.2
   Illinois(USA)             crops  -89.0  -88.0   39.0   40.0    12539   1.0  48.0                       12.7   5.7
   Kentucky(USA) broad_leaf_forest  -85.0  -84.0   36.0   37.0    12643   1.0  68.0                       25.6   6.5
     Oregon(USA) coniferous_forest -123.0 -122.0   43.0   44.0    12616   1.0  97.0                       38.4  18.3