condition	mean	min	max
4 h after light	4.5	4.5	4.5
8 h after light	5.85	2.5	9.2
12 h after light	15.2	12.2	18.2
4 h after dark	26.0	22.3	29.7
8 h after dark	15.1	6.5	23.7
12 h after dark	18.6	11.8	25.4