condition	mean	min	max
4 h after light	13.4	13.4	13.4
8 h after light	21.0	17.2	24.8
12 h after light	22.0	4.5	39.5
4 h after dark	11.45	10.1	12.8
8 h after dark	7.6	2.3	12.9
12 h after dark	37.35	30.7	44.0