condition	mean	min	max
4 h after light	6.8	6.8	6.8
8 h after light	24.3	16.5	32.1
12 h after light	15.15	3.0	27.3
4 h after dark	15.45	8.4	22.5
8 h after dark	23.5	4.7	42.3
12 h after dark	6.45	5.4	7.5