condition	mean	min	max
4 h after light	7.6773299999999995	7.6279	7.7021
8 h after light	7.65504	7.4736199999999995	7.8307
12 h after light	8.142463333333334	8.05454	8.2329
4 h after dark	8.2997	8.10993	8.53625
8 h after dark	8.316126666666667	8.162180000000001	8.52853
12 h after dark	8.27169	8.14185	8.46448