condition mean min max 3 h after light 2.564303333333333 1.86727 3.12704 6 h after light 2.39923 2.33075 2.46044 9 h after light 8.67686 5.81602 10.2411 12 h after light 11.94139 8.71087 15.9869 3 h after dark 17.387333333333334 14.0672 22.9785 6 h after dark 14.507966666666666 11.7712 17.4918 9 h after dark 8.060723333333334 6.33915 9.87844 12 h after dark 3.79916 1.85499 5.80399