condition mean min max 0 h after light 7.31871 6.57216 8.06526 4 h after light 9.13159 8.7055 9.55768 8 h after light 12.28405 12.1915 12.3766 4 h after dark 14.79315 14.2564 15.3299 8 h after dark 11.774149999999999 10.1173 13.431 12 h after dark 7.69924 6.8915 8.50698