condition mean min max 4 h after light 5.755615000000001 5.50387 6.00736 8 h after light 16.072200000000002 15.2729 16.8715 12 h after light 17.275750000000002 14.8093 19.7422 4 h after dark 27.04645 21.2476 32.8453 8 h after dark 13.79825 12.464 15.1325 12 h after dark 9.69889 9.51134 9.88644