condition	mean	min	max
4 h after light	8.5096205	8.214061	8.80518
8 h after light	7.9643375	7.785183	8.143492
12 h after light	7.9680115	7.805377	8.130646
4 h after dark	8.4818015	8.130646	8.832957
8 h after dark	8.0222485	7.48727	8.557227
12 h after dark	8.130646	8.130646	8.130646