condition	mean	min	max
4 h after light	6.52004	5.89439	7.14569
8 h after light	7.10426	6.3108	7.89772
12 h after light	15.3019	14.9928	15.611
4 h after dark	17.5585	16.6232	19.3933
8 h after dark	16.6342	14.5842	19.8648
12 h after dark	10.383416666666667	9.47131	12.1047