rowid,zoom_level,tile_column,tile_row,tile_data
338,2,2,2,https://datasette-tiles-demo.datasette.io/basemap/tiles/338.blob?_blob_column=tile_data
339,2,2,3,https://datasette-tiles-demo.datasette.io/basemap/tiles/339.blob?_blob_column=tile_data
340,2,2,1,https://datasette-tiles-demo.datasette.io/basemap/tiles/340.blob?_blob_column=tile_data
341,2,2,0,https://datasette-tiles-demo.datasette.io/basemap/tiles/341.blob?_blob_column=tile_data