condition	mean	min	max
4 h after light	7.9	7.9	7.9
8 h after light	7.15	3.9	10.4
12 h after light	8.9	2.5	15.3
4 h after dark	24.35	21.8	26.9
8 h after dark	19.3	2.6	36.0
12 h after dark	20.25	11.4	29.1