condition	mean	min	max
4 h after light	12.8	12.8	12.8
8 h after light	18.4	9.8	27.0
12 h after light	23.2	9.4	37.0
4 h after dark	15.45	6.1	24.8
8 h after dark	24.8	3.4	46.2
12 h after dark	27.4	17.8	37.0