rowid,zoom_level,tile_column,tile_row,tile_data
6998,15,15810,21651,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/6998.blob?_blob_column=tile_data
9684,15,15810,21652,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/9684.blob?_blob_column=tile_data