condition	mean	min	max
4 h after light	4.371863333333333	4.27732	4.42205
8 h after light	4.3273399999999995	4.21974	4.38152
12 h after light	4.46707	4.3576	4.67304
4 h after dark	4.44505	4.38186	4.48506
8 h after dark	4.418690000000001	4.365880000000001	4.44871
12 h after dark	4.421376666666666	4.37931	4.45717