condition	mean	min	max
4 h after light	7.744353333333334	7.55385	7.935
8 h after light	7.60305	7.504589999999999	7.6609300000000005
12 h after light	7.60525	7.505319999999999	7.714119999999999
4 h after dark	7.64806	7.48378	7.83822
8 h after dark	7.589153333333333	7.35907	7.7701
12 h after dark	7.4700299999999995	7.350789999999999	7.5788