condition	mean	min	max
4 h after light	7.785586666666666	7.69365	7.88707
8 h after light	7.99838	7.751539999999999	8.22517
12 h after light	8.116240000000001	8.04616	8.18595
4 h after dark	8.022003333333332	7.878939999999999	8.22143
8 h after dark	7.929643333333333	7.83365	7.98119
12 h after dark	7.872003333333334	7.719410000000001	7.995360000000001