condition	mean	min	max
4 h after light	16.47505	15.858	17.0921
8 h after light	7.325725	6.87693	7.77452
12 h after light	6.4828600000000005	5.45704	7.50868
4 h after dark	8.230753333333332	7.39331	8.97149
8 h after dark	13.390699999999999	11.2843	14.8798
12 h after dark	15.046366666666666	13.0155	17.1325