condition	mean	min	max
4 h after light	3.3	3.3	3.3
8 h after light	9.0	2.1	15.9
12 h after light	6.65	4.0	9.3
4 h after dark	31.1	20.7	41.5
8 h after dark	17.1	3.4	30.8
12 h after dark	19.05	16.3	21.8