condition	mean	min	max
0 h after light	7.25403	6.58816	7.9199
4 h after light	6.088905	5.19645	6.98136
8 h after light	18.61425	16.6317	20.5968
4 h after dark	16.468600000000002	15.7878	17.1494
8 h after dark	13.163699999999999	12.7175	13.6099
12 h after dark	6.235885	5.26345	7.20832