condition	mean	min	max
4 h after light	17.498099999999997	15.554279999999999	19.13574
8 h after light	15.335457333333334	6.811362	20.18016
12 h after light	19.990280000000002	16.18295	24.0641
16 h after light	19.6874	15.554720000000001	25.3122
4 h after dark	18.096486666666667	16.06261	19.683239999999998
8 h after dark	20.96511	19.09564	24.00069