condition	mean	min	max
4 h after light	21.7	21.7	21.7
8 h after light	13.3	4.5	22.1
12 h after light	15.0	6.3	23.7
4 h after dark	17.45	7.4	27.5
8 h after dark	10.5	6.8	14.2
12 h after dark	5.15	1.4	8.9