rowid,zoom_level,tile_column,tile_row,tile_data
10650,15,16370,22028,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/10650.blob?_blob_column=tile_data
10671,15,16370,22029,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/10671.blob?_blob_column=tile_data