condition	mean	min	max
4 h after light	8.31732	8.29337	8.348180000000001
8 h after light	8.363583333333333	8.24467	8.45093
12 h after light	9.202593333333333	9.10822	9.355780000000001
4 h after dark	8.32208	8.21401	8.46405
8 h after dark	8.2328	8.08774	8.399289999999999
12 h after dark	7.97098	7.90725	8.0775