condition mean min max 4 h after light 0.54495 0.0 1.0899 8 h after light 0.444966 0.0 0.889932 12 h after light 0.543445 0.0 1.08689 4 h after dark 1.906853 0.963726 2.84998 8 h after dark 4.739715 4.71875 4.76068 12 h after dark 2.1212 1.87475 2.36765