condition	mean	min	max
4 h after light	2.2	2.2	2.2
8 h after light	16.8	2.6	31.0
12 h after light	29.0	28.7	29.3
4 h after dark	9.0	1.8	16.2
8 h after dark	3.45	2.6	4.3
12 h after dark	1.35	0.5	2.2