condition	mean	min	max
4 h after light	3.3	3.3	3.3
8 h after light	19.05	10.6	27.5
12 h after light	11.15	4.7	17.6
4 h after dark	16.4	10.9	21.9
8 h after dark	2.9	1.8	4.0
12 h after dark	5.0	2.2	7.8