condition	mean	min	max
4 h after light	2.9	2.9	2.9
8 h after light	15.55	6.0	25.1
12 h after light	4.0	2.6	5.4
4 h after dark	5.8	4.6	7.0
8 h after dark	23.6	4.1	43.1
12 h after dark	13.7	6.1	21.3