condition mean min max 4 h after light 3.51248 3.20823 3.81673 8 h after light 2.9429299999999996 2.94127 2.94459 12 h after light 4.494529999999999 4.42618 4.56288 4 h after dark 5.29842 5.16174 5.4351 8 h after dark 4.98482 4.87312 5.09652 12 h after dark 4.46549 4.3668 4.56418