condition	mean	min	max
4 h after light	4.0	4.0	4.0
8 h after light	19.3	9.4	29.2
12 h after light	19.85	7.7	32.0
4 h after dark	6.7	5.1	8.3
8 h after dark	36.35	25.0	47.7
12 h after dark	18.5	10.1	26.9