## 4 Results
### Uncertainty Analysis
#### 4.4.7. Resource Use, Minerals and Metals  
A mean of 0.14 with a low Standard Deviation (0.01) and narrow percentile range (0.12 to 0.16) indicated consistent data. This suggested reliable and predictable impacts in this category, with minimal uncertainty. \begin{table}
\begin{tabular}{c c c c c c} \hline
**Impact Category** & **Mean** &
\begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} & **Median** & **5\% Percentile** & **95\% Percentile** \\ \hline Particulate Matter & 2.39 \(\times\) 10\({}^{-4}\) & 6.68 \(\times\) 10\({}^{-5}\) & 2.28 \(\times\) 10\({}^{-4}\) & 1.51 \(\times\) 10\({}^{-4}\) & 3.56 \(\times\) 10\({}^{-4}\) \\ \hline Acidification & 39.35 & 4.26 & 39.03 & 33.22 & 46.55 \\ \hline Human toxicity, cancer & 3.21 \(\times\) 10\({}^{-4}\) & 1.72 \(\times\) 10\({}^{-2}\) & 4.90 \(\times\) 10\({}^{-4}\) & \(-\)2.97 \(\times\) 10\({}^{-2}\) & 2.90 \(\times\) 10\({}^{-2}\) \\ \hline Ecotoxicity, freshwater & 129,375.38 & 130,203.83 & 116,985.75 & \(-\)72,142.74 & 357,600.18 \\ \hline Ozone depletion & 8.06 \(\times\) 10\({}^{-4}\) & 2.75 \(\times\) 10\({}^{-4}\) & 7.63 \(\times\) 10\({}^{-4}\) & 4.88 \(\times\) 10\({}^{-4}\) & 1.30 \(\times\) 10\({}^{-3}\) \\ \hline Photochemical ozone formation—human health & 17.27 & 2.75 & 16.94 & 13.60 & 21.83 \\ \hline \end{tabular}
\end{table} 
Table 17: Cont. 4.4.8. Climate Change  
The mean value of 4114.76 and a Standard Deviation of 817.22 indicated moderate variability. The range from 3044.40 (5 th percentile) to 5529.84 (95 th percentile) showed a broad spread, pointing to diverse factors influencing climate change impacts, such as varying greenhouse gas emissions. 4.4.9. Water Use  
The negative mean value (\(-\)33,036.94) and extremely high Standard Deviation (183,633.09) indicated high variability and potential data issues. The vast range from \(-\)351,355.75 to 252,083.17 suggested significant uncertainty, possibly due to diverse water use practices or measurement inconsistencies. 4.4.10. Land Use  
With a mean of 65,849.76 and a high Standard Deviation (48,349.60), this category showed substantial variability. The wide range between the percentiles (1098.88 to 153,745.13) indicated diverse land use impacts, necessitating careful consideration of different land use practices and their environmental effects. 4.4.11. Particulate Matter  
The low mean value (2.39 \(\times\) 10\({}^{-4}\)) and Standard Deviation (6.68 \(\times\) 10\({}^{-5}\)) suggested consistent data with minimal variability. The narrow percentile range indicated reliable and predictable impacts in particulate matter emissions. 4.4.12. Acidification  
A mean of 39.35 and a Standard Deviation of 4.26 indicated moderate variability. The range from 33.22 (5 th percentile) to 46.55 (95 th percentile) showed some fluctuation in acidification impacts, which could be attributed to different sources of acidifying emissions. 4.4.13. Human Toxicity, Cancer  
The mean value (3.21 \(\times\) 10\({}^{-4}\)) and high Standard Deviation (1.72 \(\times\) 10\({}^{-2}\)) indicated significant variability and potential data anomalies, as shown by the negative 5 th percentile (\(-\)2.97 \(\times\) 10\({}^{-2}\)). This suggested the need for further data review and validation. 4.4.14. Ecotoxicity, Freshwater  
The high mean (129,375.38) and extremely high Standard Deviation (130,203.83) indicated substantial variability and uncertainty. The wide range between the 5 th percentile (\(-\)72,142.74) and the 95 th percentile (357,600.18) reflected potential data inconsistencies or diverse ecotoxicity factors in freshwater environments. 4.4.15. Ozone Depletion  
A mean of 8.06 \(\times\) 10\({}^{-4}\) and a moderate Standard Deviation (2.75 \(\times\) 10\({}^{-4}\)) suggested relatively consistent data. The narrow percentile range (4.88 \(\times\) 10\({}^{-4}\) to 1.30 \(\times\) 10\({}^{-3}\)) indicated reliable and predictable impacts on ozone depletion. 4.4.16. Photochemical Ozone Formation--Human Health  
The mean value of 17.27 with a Standard Deviation of 2.75 indicated moderate variability.