condition	mean	min	max
4 h after light	7.46289	7.2095199999999995	7.67517
8 h after light	7.08534	6.80775	7.2720899999999995
12 h after light	7.02296	6.777080000000001	7.211
4 h after dark	7.083886666666666	6.54324	7.53742
8 h after dark	7.21723	6.8214	7.466589999999999
12 h after dark	6.896976666666667	6.77026	6.987710000000001