condition	mean	min	max
4 h after light	21.3	21.3	21.3
8 h after light	25.95	25.2	26.7
12 h after light	6.4	5.2	7.6
4 h after dark	7.55	3.1	12.0
8 h after dark	7.4	1.3	13.5
12 h after dark	9.7	4.6	14.8