condition	mean	min	max
4 h after light	9.7	9.7	9.7
8 h after light	18.3	4.8	31.8
12 h after light	22.45	17.7	27.2
4 h after dark	58.35	46.3	70.4
8 h after dark	26.7	7.3	46.1
12 h after dark	32.15	27.7	36.6