condition mean min max 0 h after light 5.82039 5.42241 6.21837 4 h after light 5.958615 5.91549 6.00174 8 h after light 6.397164999999999 5.91989 6.87444 4 h after dark 5.766825 5.29129 6.24236 8 h after dark 6.30401 6.25421 6.35381 12 h after dark 4.92002 4.74328 5.09676