rowid,zoom_level,tile_column,tile_row,tile_data
1901,14,8197,11003,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/1901.blob?_blob_column=tile_data
3585,14,8198,11003,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/3585.blob?_blob_column=tile_data