condition	mean	min	max
4 h after light	6.9189799999999995	6.36953	7.46843
8 h after light	6.96848	6.89061	7.04635
12 h after light	7.699870000000001	6.95784	8.4419
4 h after dark	9.161439999999999	8.91453	9.40835
8 h after dark	8.812615000000001	8.71756	8.90767
12 h after dark	8.524225000000001	8.27022	8.77823