condition	mean	min	max
4 h after light	7.6813400000000005	7.335710000000001	7.88381
8 h after light	7.593726666666667	7.52422	7.70291
12 h after light	7.6125533333333335	7.56521	7.65366
4 h after dark	7.8534533333333325	7.7715	7.9927399999999995
8 h after dark	7.93262	7.90822	7.94642
12 h after dark	8.233533333333334	8.11548	8.3701