condition	mean	min	max
4 h after light	7.9146399999999995	7.868989999999999	8.002839999999999
8 h after light	7.913813333333334	7.65072	8.078560000000001
12 h after light	7.879060000000001	7.51047	8.144630000000001
4 h after dark	7.904676666666667	7.31411	8.322000000000001
8 h after dark	7.80915	7.387010000000001	8.10722
12 h after dark	7.7034	7.40401	8.08876