condition mean min max 0 h after light 8.32765 8.16512 8.49018 4 h after light 2.55606 2.34384 2.76828 8 h after light 2.7364699999999997 2.01594 3.457 4 h after dark 19.2252 14.6757 23.7747 8 h after dark 3.3588050000000003 3.34471 3.3729 12 h after dark 4.556375 1.99058 7.12217