rowid,zoom_level,tile_column,tile_row,tile_data
260,12,2018,2769,http://datasette-tiles.staging.planning.data.gov.uk/battlefield/tiles/260.blob?_blob_column=tile_data
263,12,2018,2763,http://datasette-tiles.staging.planning.data.gov.uk/battlefield/tiles/263.blob?_blob_column=tile_data
280,12,2018,2770,http://datasette-tiles.staging.planning.data.gov.uk/battlefield/tiles/280.blob?_blob_column=tile_data