condition	mean	min	max
4 h after light	3.7	3.7	3.7
8 h after light	2.15	0.7	3.6
12 h after light	16.95	3.3	30.6
4 h after dark	10.55	1.6	19.5
8 h after dark	17.05	7.2	26.9
12 h after dark	16.4	16.4	16.4