condition	mean	min	max
4 h after light	7.051349999999999	6.832789999999999	7.23402
8 h after light	7.46542	7.181360000000001	7.6418800000000005
12 h after light	7.263210000000001	6.71886	7.667560000000001
4 h after dark	6.969796666666666	6.73377	7.14867
8 h after dark	6.8240300000000005	6.72497	6.945460000000001
12 h after dark	6.686303333333333	6.4158599999999995	6.83605