condition	mean	min	max
4 h after light	7.7	7.7	7.7
8 h after light	9.7	1.5	17.9
12 h after light	16.7	5.3	28.1
4 h after dark	22.0	20.0	24.0
8 h after dark	17.3	5.9	28.7
12 h after dark	10.05	7.6	12.5