type=categorical category_min=1 category_max=16 projection=regular_ll dx=0.0083333333333333 dy=0.0083333333333333 known_x=1.0 known_y=1.0 known_lat=-90.0 known_lon=-180.0 wordsize=1 tile_x=43200 tile_y=21600 tile_z=1 row_order=top_bottom units="category" missing_value=241.0 description="16-category top-layer soil type"