Population Density | 1 mPa %Change | 1 dB %Change | ||||||
---|---|---|---|---|---|---|---|---|

2.5 km | 5 km | 10 km | 18.21 km (Mean) | 2.5 km | 5 km | 10 km | 18.21 km (Mean) | |

Min:26 | –10.07^{***}(0.25) | –7.95^{***}(0.20) | –5.83^{***}(0.16) | –4.00^{***}(0.16) | –8.12^{***}(0.2) | –6.41^{***}(0.16) | –4.70^{***}(0.13) | –3.23^{***}(0.13) |

Q1:635 | –9.16^{***}(0.18) | –7.04^{***}(0.11) | –4.92^{***}(0.07) | –3.08^{***}(0.09) | –7.39^{***}(0.15) | –5.68^{***}(0.09) | –3.97^{***}(0.06) | –2.49^{***}(0.07) |

Q2:1,110 | –9.00^{***}(0.17) | –6.88^{***}(0.11) | –4.76^{***}(0.07) | –2.92^{***}(0.09) | –7.26^{***}(0.14) | –5.55^{***}(0.09) | –3.84^{***}(0.05) | –2.36^{***}(0.07) |

Mean:1,125 | –8.99^{***}(0.17) | –6.87^{***}(0.11) | –4.75^{***}(0.07) | –2.92^{***}(0.09) | –7.26^{***}(0.14) | –5.55^{***}(0.09) | –3.84^{***}(0.05) | –2.36^{***}(0.07) |

Q3:1,554 | –8.90^{***}(0.17) | –6.78^{***}(0.11) | –4.66^{***}(0.07) | –2.83^{***}(0.09) | –7.18^{***}(0.14) | –5.47^{***}(0.09) | –3.76^{***}(0.06) | –2.28^{***}(0.08) |

Max:4,560 | –8.59^{***}(0.17) | –6.47^{***}(0.11) | –4.35^{***}(0.09) | –2.52^{***}(0.11) | –6.93^{***}(0.14) | –5.22^{***}(0.09) | –3.51^{***}(0.07) | –2.03^{***}(0.09) |

*Note:*The numbers in parentheses are standard errors computed with the delta method. The values reported in the table refer to the percentage change in the property value due to a 1 mPa (columns 2–5) or 1 dB (columns 6–9) increase in L50 from its average value; the change of a 1 dB increase from the sample average converted into millipascals is calculated as 1/*N*·∑_{i=1…N}[0.02·10^{(μ(i)+1)/20}– 0.02·10^{μ(i)/20}] ≈ 0.807 mPa. Q1 is the 25td percentile of the population density; Q2 is the median population density; Q3 is the 75td percentile of the population density. Population density is expressed in inhabitants per square kilometer.↵*** Significance at the 99% level of confidence.