condition	mean	min	max
4 h after light	43.1	43.1	43.1
8 h after light	6.5	1.6	11.4
12 h after light	21.4	20.1	22.7
4 h after dark	20.6	15.2	26.0
8 h after dark	17.6	4.7	30.5
12 h after dark	20.55	17.5	23.6