rowid,zoom_level,tile_column,tile_row,tile_data
6244,15,16348,21858,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/6244.blob?_blob_column=tile_data
6333,15,16348,21859,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/6333.blob?_blob_column=tile_data