condition	mean	min	max
4 h after light	4.4	4.4	4.4
8 h after light	17.45	9.6	25.3
12 h after light	23.65	20.3	27.0
4 h after dark	5.65	4.7	6.6
8 h after dark	8.45	5.5	11.4
12 h after dark	11.2	7.6	14.8