condition mean min max 4 h after light 5.294835 4.97474 5.61493 8 h after light 4.384565 4.3832 4.38593 12 h after light 5.3804300000000005 5.34605 5.41481 4 h after dark 6.388434999999999 5.91969 6.85718 8 h after dark 6.55551 6.17099 6.94003 12 h after dark 7.224914999999999 6.70198 7.74785