condition	mean	min	max
4 h after light	8.127908	7.993046	8.26277
8 h after light	8.5626955	7.683597	9.441794
12 h after light	8.081506000000001	7.900242	8.26277
4 h after dark	8.5731515	7.519058	9.627245
8 h after dark	8.054914499999999	7.90372	8.206109
12 h after dark	8.948263	8.948263	8.948263