condition	mean	min	max
4 h after light	6.241295	5.98243	6.50016
8 h after light	4.550665	4.19109	4.91024
12 h after light	13.5176	11.4968	15.5384
4 h after dark	3.7208699999999997	3.61211	3.82963
8 h after dark	3.326035	3.22557	3.4265
12 h after dark	3.7386	3.05497	4.42223