condition	mean	min	max
4 h after light	8.75404	8.41033	9.01091
8 h after light	8.825159999999999	8.32687	9.151689999999999
12 h after light	8.846836666666666	8.53139	9.0518
4 h after dark	8.423876666666667	7.95373	8.6625
8 h after dark	8.4837	7.86804	8.95085
12 h after dark	8.318916666666667	7.80025	8.62433