condition	mean	min	max
4 h after light	9.624355	8.65231	10.5964
8 h after light	7.53725	7.516	7.5585
12 h after light	8.89078	8.46744	9.31412
4 h after dark	11.16863	9.92729	12.0015
8 h after dark	12.222966666666666	11.5185	12.7006
12 h after dark	10.746733333333333	10.4085	10.9672