condition	mean	min	max
4 h after light	2.20343	1.88474	2.52212
8 h after light	3.90179	3.40683	4.39675
12 h after light	4.990945	4.96844	5.01345
4 h after dark	6.28063	5.50929	7.01321
8 h after dark	3.385623333333333	3.03351	3.63518
12 h after dark	4.09556	2.69261	5.40351