condition	mean	min	max
4 h after light	4.936945	4.59542	5.27847
8 h after light	4.20625	3.97204	4.44046
12 h after light	6.41625	6.06359	6.76891
4 h after dark	10.09107	9.61734	10.5648
8 h after dark	10.07293	9.52226	10.6236
12 h after dark	8.22587	7.97758	8.47416