condition	mean	min	max
4 h after light	9.339766666666666	9.247589999999999	9.47277
8 h after light	9.285893333333334	9.060939999999999	9.570780000000001
12 h after light	9.20659	8.93725	9.39122
4 h after dark	9.22131	9.0897	9.43043
8 h after dark	9.03428	8.93218	9.17742
12 h after dark	8.979793333333333	8.850719999999999	9.06736