condition	mean	min	max
4 h after light	16.87592666666667	15.76997	18.34225
8 h after light	9.498367666666667	6.0808029999999995	12.81687
12 h after light	4.951163	2.000096	7.3674729999999995
16 h after light	10.791487333333333	4.810075	18.94313
4 h after dark	15.698977333333334	8.884172	25.29166
8 h after dark	9.299513000000001	8.429313	11.03348