condition	mean	min	max
4 h after light	23.1	23.1	23.1
8 h after light	6.25	2.0	10.5
12 h after light	15.7	14.2	17.2
4 h after dark	53.55	52.9	54.2
8 h after dark	49.8	32.4	67.2
12 h after dark	33.25	23.2	43.3