rowid,zoom_level,tile_column,tile_row,tile_data
8683,15,16159,21736,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/8683.blob?_blob_column=tile_data
10516,15,16158,21736,http://datasette-tiles.planning.data.gov.uk/ramsar/tiles/10516.blob?_blob_column=tile_data