rowid,zoom_level,tile_column,tile_row,tile_data
2335,14,8250,10968,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/2335.blob?_blob_column=tile_data
3084,14,8249,10968,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/3084.blob?_blob_column=tile_data