condition	mean	min	max
4 h after light	6.38483	6.28326	6.48358
8 h after light	6.42658	6.23656	6.541580000000001
12 h after light	6.36029	6.26546	6.43749
4 h after dark	6.188776666666667	6.11806	6.25149
8 h after dark	6.187613333333333	5.9663699999999995	6.3852400000000005
12 h after dark	6.218423333333333	6.0323400000000005	6.5761899999999995