condition	mean	min	max
0 h after light	17.81965	17.4717	18.1676
4 h after light	12.90035	12.2814	13.5193
8 h after light	10.02426	8.78002	11.2685
4 h after dark	14.8006	14.1185	15.4827
8 h after dark	16.2362	15.156	17.3164
12 h after dark	20.9589	16.9602	24.9576