condition	mean	min	max
4 h after light	6.7	6.7	6.7
8 h after light	11.5	1.9	21.1
12 h after light	30.55	16.4	44.7
4 h after dark	7.45	3.4	11.5
8 h after dark	15.2	6.9	23.5
12 h after dark	12.0	4.1	19.9