condition	mean	min	max
4 h after light	9.385153333333333	9.02192	9.56741
8 h after light	9.372250000000001	9.06444	9.663860000000001
12 h after light	9.250756666666666	8.82718	9.46275
4 h after dark	9.09214	8.63999	9.34495
8 h after dark	9.042689999999999	8.803289999999999	9.1886
12 h after dark	8.99651	8.80471	9.09259