rowid,zoom_level,tile_column,tile_row,tile_data
5789,15,16369,22028,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/5789.blob?_blob_column=tile_data
5864,15,16369,22029,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/5864.blob?_blob_column=tile_data