condition	mean	min	max
4 h after light	4.420295	3.89481	4.94578
8 h after light	4.23878	4.08887	4.38869
12 h after light	4.71382	4.53375	4.89389
4 h after dark	8.00036	7.921	8.07972
8 h after dark	6.22883	5.30789	7.14977
12 h after dark	5.1581	4.95763	5.35857