condition mean min max 0 h after light 0.842252 0.74941 0.935094 4 h after light 0.752981 0.553171 0.952791 8 h after light 0.9304785 0.380747 1.48021 4 h after dark 1.103509 0.737608 1.46941 8 h after dark 1.0184805 0.736761 1.3002 12 h after dark 0.8302835 0.74707 0.913497