condition mean min max 4 h after light 8.728993333333333 6.17111 11.5856 8 h after light 8.84712 2.56118 15.1574 12 h after light 14.617546666666666 9.05564 19.5597 4 h after dark 22.936333333333334 18.8017 25.8492 8 h after dark 39.1959 32.3156 50.8281 12 h after dark 28.5242 24.7845 31.4486