condition	mean	min	max
4 h after light	7.079715	6.9051	7.25433
8 h after light	5.591415	5.54615	5.63668
12 h after light	6.63097	6.36096	6.90098
4 h after dark	7.22609	6.76344	7.68874
8 h after dark	7.16955	6.96763	7.37147
12 h after dark	8.06681	7.65522	8.4784