condition	mean	min	max
4 h after light	4.201915	3.60136	4.80247
8 h after light	2.017765	1.92625	2.10928
12 h after light	1.48942	1.44078	1.53806
4 h after dark	2.7189	2.3131	3.20313
8 h after dark	2.66707	2.29728	3.02405
12 h after dark	3.31796	3.15101	3.5478