condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0178576 0.0 0.0357152 12 h after light 0.0184943 0.0 0.0369886 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.008109966666666668 0.0 0.0243299