condition mean min max 4 h after light 0.004723865 0.0 0.00944773 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0092184 0.0 0.0276552