condition	mean	min	max
4 h after light	8.394036666666667	8.17849	8.77389
8 h after light	8.98723	8.748389999999999	9.22532
12 h after light	8.916366666666667	8.77389	9.146469999999999
4 h after dark	8.47967	8.256789999999999	8.59516
8 h after dark	8.310706666666666	8.14229	8.48122
12 h after dark	8.39796	8.28523	8.58868