condition	mean	min	max
4 h after light	2.132915	2.0828	2.18303
8 h after light	4.75032	4.48974	5.0109
12 h after light	7.389255	7.27346	7.50505
4 h after dark	8.303485	7.98791	8.61906
8 h after dark	6.329415	6.03574	6.62309
12 h after dark	4.242875	3.78054	4.70521