condition	mean	min	max
4 h after light	6.604485	6.01989	7.18908
8 h after light	6.568665	6.47808	6.65925
12 h after light	7.6661649999999995	7.59947	7.73286
4 h after dark	9.057565	9.03839	9.07674
8 h after dark	9.78605	9.0694	10.5027
12 h after dark	8.71271	8.37965	9.04577