condition	mean	min	max
4 h after light	9.93145	7.9463	11.9166
8 h after light	7.62973	6.84152	8.41794
12 h after light	8.86953	7.64976	10.0893
4 h after dark	9.38673	9.06285	9.72962
8 h after dark	18.5994	16.3334	20.7962
12 h after dark	17.052666666666667	14.3942	18.9617