condition	mean	min	max
4 h after light	7.754983333333334	7.73257	7.7875
8 h after light	7.57562	7.498010000000001	7.71775
12 h after light	7.6957	7.65045	7.753360000000001
4 h after dark	7.797626666666667	7.77797	7.811910000000001
8 h after dark	7.7422466666666665	7.4817800000000005	7.97138
12 h after dark	8.153906666666666	8.09314	8.205219999999999