condition mean min max 4 h after light 1995.085 1870.096667 2141.443333 8 h after light 1654.5677776666666 1586.31 1730.07 12 h after light 1748.4333333333334 1690.433333 1850.15 1.5 h after dark 2097.2222223333333 1628.046667 2467.406667 5.5 h after dark 2163.37 1708.253333 2609.926667 9.5 h after dark 2041.752222 1920.063333 2261.02