condition	mean	min	max
4 h after light	7.78132	7.6308	7.951960000000001
8 h after light	8.026063333333333	7.98774	8.0849
12 h after light	7.603289999999999	7.527419999999999	7.723310000000001
4 h after dark	7.372446666666667	7.0708	7.60301
8 h after dark	7.488346666666667	7.17576	7.71748
12 h after dark	7.103820000000001	6.88952	7.2672300000000005