condition	mean	min	max
4 h after light	7.340185	6.84776	7.83261
8 h after light	8.38162	8.08724	8.676
12 h after light	8.914525000000001	8.76842	9.06063
4 h after dark	12.356300000000001	12.1567	12.5559
8 h after dark	11.4314	10.4579	12.4049
12 h after dark	10.24515	9.8222	10.6681