condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.143374 0.0 0.430122 12 h after light 0.047116 0.0 0.141348 4 h after dark 0.043008333333333336 0.0 0.129025 8 h after dark 0.0 0.0 0.0 12 h after dark 0.06851933333333333 0.0 0.205558