condition	mean	min	max
4 h after light	2.86823	2.56056	3.1759
8 h after light	3.635115	2.08383	5.1864
12 h after light	4.41435	1.26685	7.56185
4 h after dark	6.12208	4.49317	7.75099
8 h after dark	4.96715	3.88424	6.05006
12 h after dark	4.11128	2.75967	5.46289