condition	mean	min	max
4 h after light	3.0	3.0	3.0
8 h after light	4.9	3.0	6.8
12 h after light	9.65	7.0	12.3
4 h after dark	11.55	8.6	14.5
8 h after dark	23.15	19.8	26.5
12 h after dark	17.5	11.7	23.3