condition	mean	min	max
0 h after light	7.817515	7.75707	7.87796
4 h after light	6.73919	6.73185	6.74653
8 h after light	6.302350000000001	5.97893	6.62577
4 h after dark	8.78707	7.39164	10.1825
8 h after dark	8.236115	7.76831	8.70392
12 h after dark	8.4205	8.27995	8.56105