condition	mean	min	max
4 h after light	3.76775	3.57789	3.95761
8 h after light	4.08028	3.72304	4.43752
12 h after light	4.39837	4.18446	4.61228
4 h after dark	6.028885	5.45928	6.59849
8 h after dark	5.61688	5.51614	5.71762
12 h after dark	5.62598	5.52917	5.72279