condition	mean	min	max
4 h after light	6.068375	5.21844	6.91831
8 h after light	9.12524	9.00269	9.24779
12 h after light	13.26585	12.8145	13.7172
4 h after dark	19.37805	18.2875	20.4686
8 h after dark	19.3385	18.6327	20.0443
12 h after dark	12.047799999999999	11.9454	12.1502