condition	mean	min	max
4 h after light	12.36325	11.6979	13.0286
8 h after light	8.320365	7.93026	8.71047
12 h after light	8.084545	8.06128	8.10781
4 h after dark	9.68487	9.42041	9.94933
8 h after dark	13.21925	12.8968	13.5417
12 h after dark	14.5856	14.4515	14.7197