condition	mean	min	max
4 h after light	6.0179849999999995	5.21449	6.82148
8 h after light	5.940925	5.89742	5.98443
12 h after light	6.47225	5.83041	7.11409
4 h after dark	7.92581	6.96127	8.89035
8 h after dark	6.329725	6.24692	6.41253
12 h after dark	6.9069199999999995	6.74171	7.07213