condition	mean	min	max
4 h after light	7.611043333333334	7.52825	7.657780000000001
8 h after light	7.568956666666668	7.534680000000001	7.602930000000001
12 h after light	7.625473333333333	7.5353	7.76207
4 h after dark	7.75405	7.64562	7.81981
8 h after dark	7.749680000000001	7.59646	7.886260000000001
12 h after dark	7.70026	7.64991	7.73728