condition	mean	min	max
4 h after light	8.009360000000001	7.88388	8.23133
8 h after light	8.019183333333334	7.809819999999999	8.416310000000001
12 h after light	8.06148	7.94538	8.2738
4 h after dark	7.892423333333333	7.62922	8.137260000000001
8 h after dark	7.8814166666666665	7.72042	8.14104
12 h after dark	7.606463333333333	7.41087	7.719339999999999