condition mean min max 4 h after light 7104.013333333333 6350.96 7596.16 8 h after light 8790.894444666666 7223.236667 9748.076667 12 h after light 10605.976667666666 9360.723333 11778.97 1.5 h after dark 10754.326667666666 8958.223333 13477.66667 5.5 h after dark 9365.781112 8578.433333 10818.75667 9.5 h after dark 7535.09 6447.086667 9121.36