rowid,zoom_level,tile_column,tile_row,tile_data
2701,14,8186,11015,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/2701.blob?_blob_column=tile_data
2734,14,8186,11014,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/2734.blob?_blob_column=tile_data