condition	mean	min	max
4 h after light	27.9	27.9	27.9
8 h after light	15.45	3.9	27.0
12 h after light	11.5	7.7	15.3
4 h after dark	13.4	5.5	21.3
8 h after dark	6.15	4.5	7.8
12 h after dark	28.0	25.2	30.8