condition	mean	min	max
4 h after light	18.3	18.3	18.3
8 h after light	21.6	5.6	37.6
12 h after light	2.35	1.3	3.4
4 h after dark	13.2	6.9	19.5
8 h after dark	17.85	15.9	19.8
12 h after dark	9.7	6.5	12.9