condition	mean	min	max
4 h after light	8.757263333333333	8.72382	8.81405
8 h after light	8.918073333333334	8.82959	9.0913
12 h after light	8.995956666666666	8.79355	9.26984
4 h after dark	8.775276666666667	8.5998	9.02011
8 h after dark	8.617199999999999	8.430769999999999	8.86989
12 h after dark	8.44787	8.04214	8.670119999999999