condition	mean	min	max
0 h after light	5.917165	5.4841	6.35023
4 h after light	6.678705	5.80106	7.55635
8 h after light	16.6519	15.9003	17.4035
4 h after dark	16.79875	12.2349	21.3626
8 h after dark	12.70185	11.8889	13.5148
12 h after dark	7.23208	6.05013	8.41403