condition	mean	min	max
4 h after light	7.5483899999999995	7.26455	7.7981300000000005
8 h after light	7.266463333333333	7.167269999999999	7.36445
12 h after light	7.309636666666666	7.245989999999999	7.3642
4 h after dark	7.686330000000001	7.533930000000001	7.852860000000001
8 h after dark	7.80471	7.70856	7.87799
12 h after dark	7.548556666666666	7.34037	7.808910000000001