condition	mean	min	max
4 h after light	3.9	3.9	3.9
8 h after light	3.25	2.6	3.9
12 h after light	5.25	4.1	6.4
4 h after dark	17.25	4.8	29.7
8 h after dark	20.3	3.7	36.9
12 h after dark	3.35	2.5	4.2