condition	mean	min	max
4 h after light	8.969293333333333	8.78578	9.06703
8 h after light	8.49617	8.3047	8.70192
12 h after light	8.52356	8.27665	8.64857
4 h after dark	8.720006666666666	8.41785	8.9228
8 h after dark	8.53478	8.37951	8.82475
12 h after dark	8.461646666666667	8.26497	8.638119999999999