condition mean min max 4 h after light 570.350509 496.101551 644.599467 8 h after light 576.8187645 477.29995 676.337579 12 h after light 729.374135 638.30898 820.43929 4 h after dark 520.203946 429.188926 611.218966 8 h after dark 344.50619600000005 215.702805 473.309587 12 h after dark 395.30898 395.30898 395.30898