condition	mean	min	max
4 h after light	8.47971	8.43833	8.52466
8 h after light	7.56452	7.357880000000001	7.88298
12 h after light	8.166536666666667	8.02138	8.24443
4 h after dark	7.87851	7.834910000000001	7.96402
8 h after dark	8.363043333333334	8.343	8.40047
12 h after dark	8.88378	8.771289999999999	9.03129