rowid,zoom_level,tile_column,tile_row,tile_data
1437,13,4125,5483,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/1437.blob?_blob_column=tile_data
1666,13,4124,5483,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/1666.blob?_blob_column=tile_data