condition	mean	min	max
4 h after light	4.218426666666667	4.10586	4.37922
8 h after light	4.22281	4.13229	4.37876
12 h after light	4.156903333333333	3.9818800000000003	4.34926
4 h after dark	4.207843333333333	4.17983	4.2432099999999995
8 h after dark	4.08245	3.9205699999999997	4.1729400000000005
12 h after dark	4.22618	4.09954	4.32397