condition	mean	min	max
4 h after light	6.005813333333333	5.90626	6.13417
8 h after light	6.34056	6.10998	6.5509900000000005
12 h after light	6.489166666666667	6.3379199999999996	6.74892
4 h after dark	6.352963333333334	6.198580000000001	6.438280000000001
8 h after dark	6.3118566666666664	6.07656	6.65495
12 h after dark	6.26792	6.04663	6.521669999999999