condition	mean	min	max
4 h after light	0.13127385	0.0941817	0.168366
8 h after light	3.667915	3.43814	3.89769
12 h after light	16.86995	16.3385	17.4014
4 h after dark	15.99865	15.6782	16.3191
8 h after dark	3.399825	3.32781	3.47184
12 h after dark	0.6271235	0.50562	0.748627