rowid,zoom_level,tile_column,tile_row,tile_data
39509,15,15960,21701,http://datasette-tiles.planning.data.gov.uk/conservation-area/tiles/39509.blob?_blob_column=tile_data
53508,15,15960,21702,http://datasette-tiles.planning.data.gov.uk/conservation-area/tiles/53508.blob?_blob_column=tile_data