condition	mean	min	max
4 h after light	7.64509	7.60509	7.67565
8 h after light	7.713543333333333	7.45822	7.91245
12 h after light	7.44195	7.30552	7.5218300000000005
4 h after dark	7.33641	7.14838	7.454510000000001
8 h after dark	7.130423333333334	6.679060000000001	7.4156
12 h after dark	7.01422	6.858289999999999	7.2119100000000005