condition	mean	min	max
4 h after light	8.43363	8.42159	8.4512
8 h after light	8.520036666666666	8.39508	8.5876
12 h after light	8.536373333333334	8.45169	8.595930000000001
4 h after dark	8.642953333333333	8.59348	8.722489999999999
8 h after dark	8.56436	8.532	8.58986
12 h after dark	8.50499	8.27057	8.74025