condition	mean	min	max
4 h after light	8.644386666666668	8.55756	8.69639
8 h after light	9.70777	9.43234	9.90552
12 h after light	9.10967	8.660219999999999	9.391169999999999
4 h after dark	8.877266666666667	8.31963	9.19088
8 h after dark	8.679656666666666	8.45299	8.81285
12 h after dark	7.7657099999999994	7.3535	8.06119