rowid,zoom_level,tile_column,tile_row,tile_data
486,12,2011,2785,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/486.blob?_blob_column=tile_data
590,12,2010,2785,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/590.blob?_blob_column=tile_data