condition	mean	min	max
0 h after light	8.96286	8.90276	9.02296
4 h after light	6.8402899999999995	6.51906	7.16152
8 h after light	6.605115	6.35963	6.8506
4 h after dark	8.761225	8.59025	8.9322
8 h after dark	11.94565	11.8928	11.9985
12 h after dark	8.22545	8.05892	8.39198