condition	mean	min	max
4 h after light	7.23926	7.19077	7.28775
8 h after light	5.353405	4.92783	5.77898
12 h after light	7.670995	7.16205	8.17994
4 h after dark	7.64369	6.89926	8.33538
8 h after dark	9.148816666666667	8.94466	9.52014
12 h after dark	7.149303333333333	6.55579	7.87161