condition	mean	min	max
4 h after light	6.606565	6.1953	7.01783
8 h after light	5.9927399999999995	5.48727	6.49821
12 h after light	8.50869	8.20092	8.81646
4 h after dark	6.938603333333333	6.20811	7.48745
8 h after dark	6.83596	6.55325	6.97768
12 h after dark	6.192316666666667	5.75423	6.72706