condition	mean	min	max
4 h after light	1.9	1.9	1.9
8 h after light	7.0	4.3	9.7
12 h after light	3.8	2.8	4.8
4 h after dark	16.45	4.4	28.5
8 h after dark	2.95	1.1	4.8
12 h after dark	3.15	2.5	3.8