condition	mean	min	max
4 h after light	3.4	3.4	3.4
8 h after light	3.9	2.5	5.3
12 h after light	10.1	2.3	17.9
4 h after dark	17.2	4.9	29.5
8 h after dark	19.2	6.9	31.5
12 h after dark	33.7	28.2	39.2