condition	mean	min	max
4 h after light	6.962515	6.71391	7.21112
8 h after light	6.213375	5.79108	6.63567
12 h after light	5.624625	5.31852	5.93073
4 h after dark	8.823413333333333	8.42682	9.40613
8 h after dark	8.375606666666666	8.197	8.68692
12 h after dark	8.79353	7.72253	9.47585