condition mean min max 4 h after light 10.022156666666667 9.947510000000001 10.09708 8 h after light 10.25485 10.20766 10.308019999999999 12 h after light 10.188966666666666 10.051219999999999 10.2829 4 h after dark 10.395719999999999 10.34274 10.44422 8 h after dark 10.39323 10.31165 10.52594 12 h after dark 10.541963333333333 10.490269999999999 10.59323