condition	mean	min	max
4 h after light	4.47799	3.5115	5.44448
8 h after light	3.7593050000000003	3.08778	4.43083
12 h after light	6.827439999999999	6.33015	7.32473
4 h after dark	15.823699999999999	15.1666	16.4808
8 h after dark	14.062850000000001	13.2734	14.8523
12 h after dark	8.56417	8.13097	8.99737