condition	mean	min	max
0 h after light	17.673099999999998	17.5696	17.7766
4 h after light	9.82277	8.48644	11.1591
8 h after light	16.9698	16.0773	17.8623
4 h after dark	18.5733	16.6819	20.4647
8 h after dark	17.407400000000003	16.01	18.8048
12 h after dark	14.42485	13.7329	15.1168