rowid,zoom_level,tile_column,tile_row,tile_data
2691,14,8250,10967,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/2691.blob?_blob_column=tile_data
3484,14,8249,10967,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/3484.blob?_blob_column=tile_data