condition	mean	min	max
4 h after light	3.8	3.8	3.8
8 h after light	7.6	7.3	7.9
12 h after light	3.2	2.9	3.5
4 h after dark	28.25	7.5	49.0
8 h after dark	13.45	5.4	21.5
12 h after dark	17.0	7.0	27.0