condition	mean	min	max
4 h after light	7.232863333333333	6.768160000000001	7.53293
8 h after light	7.948263333333333	7.473039999999999	8.40753
12 h after light	8.75365	8.628730000000001	8.99216
4 h after dark	8.13321	7.8936399999999995	8.31995
8 h after dark	7.958210000000001	7.819660000000001	8.109210000000001
12 h after dark	7.399673333333333	7.0117	7.604139999999999