condition	mean	min	max
4 h after light	7.853383333333333	7.68973	8.003630000000001
8 h after light	7.900353333333333	7.791360000000001	8.10491
12 h after light	7.696993333333333	7.46938	7.96029
4 h after dark	7.700873333333333	7.54742	7.841
8 h after dark	7.62563	7.602930000000001	7.66918
12 h after dark	7.670890000000001	7.608210000000001	7.7648