condition	mean	min	max
4 h after light	8.038129999999999	7.712269999999999	8.2651
8 h after light	8.346423333333334	8.15628	8.4501
12 h after light	8.134696666666667	8.10362	8.17737
4 h after dark	8.323916666666666	8.278089999999999	8.378789999999999
8 h after dark	8.270976666666666	8.20825	8.33216
12 h after dark	8.0417	7.8818	8.20035