## 5 Discussion
### Analysis of Fuzzy Uncertainties
\begin{table}
\begin{tabular}{c c c c c} \hline \hline  & \(\alpha\) = 0.5 & \(\alpha\) = 0.6 & \(\alpha\) = 0.8 & \(\alpha\) = 0.9 \\ \hline \multicolumn{5}{c}{**Traffic system and its relative pollutants**} \\ \hline Vehicle ownership (\(10^{6}\)) & 22.11 & 22.34 & 22.80 & 23.03 \\ CO emissions (\(10^{4}\) ton) & 2534.02 & 2561.85 & 2616.70 & 2644.26 \\ NO\(\chi\) emissions (\(10^{3}\) ton) & 679.66 & 685.44 & 696.98 & 702.75 \\ HC emissions (\(10^{4}\) ton) & 452.69 & 457.67 & 467.62 & 472.59 \\ PM emissions (\(10^{3}\) ton) & 22.09 & 22.28 & 22.67 & 22.86 \\ \hline \multicolumn{5}{c}{**Heat processing (\(10^{2}\) kJ)**} \\ \hline  & 707.31 & 708.31 & 710.31 & 711.31 \\ \hline \multicolumn{5}{c}{**Coke processing (\(10^{6}\) ton)**} \\ \hline  & 69.61 & 70.11 & 71.11 & 71.61 \\ \hline \multicolumn{5}{c}{**Import electricity amounts (\(10^{8}\) kWh, h = 1 )**} \\ \hline  & 161.10 & 163.10 & 167.10 & 169.10 \\ \hline \multicolumn{5}{c}{**Air pollutants and CO\({}_{2}\) from energy processing and electricity generation (\(10^{3}\) ton)**} \\ \hline SO\({}_{2}\) emissions & 667.86 & 669.95 & 674.12 & 676.20 \\ NO\(\chi\) emissions & 476.67 & 479.17 & 484.17 & 486.67 \\ PM emissions & 83.92 & 84.18 & 84.69 & 84.95 \\ CO\({}_{2}\) emissions & 560593.92 & 564482.45 & 572259.52 & 576148.05 \\ \hline \multicolumn{5}{c}{**Heat processing (\(10^{2}\) kJ)**} \\ \hline  & 748.38 & 749.38 & 751.38 & 752.38 \\ \hline \multicolumn{5}{c}{**Coke processing (\(10^{6}\) ton)**} \\ \hline  & 73.84 & 74.34 & 75.34 & 75.84 \\ \hline \multicolumn{5}{c}{**Import electricity amounts (\(10^{6}\) kWh, h = 1 )**} \\ \hline  & 164.89 & 166.89 & 170.89 & 172.89 \\ \hline \multicolumn{5}{c}{**Air pollutants and CO\({}_{2}\) from energy processing and electricity generation (\(10^{3}\) ton)**} \\ \hline SO\({}_{2}\) emissions & 689.20 & 691.28 & 695.45 & 697.53 \\ NO\(\chi\) emissions & 497.49 & 499.95 & 504.85 & 507.30 \\ PM emissions & 87.16 & 87.41 & 87.93 & 88.18 \\ CO\({}_{2}\) emissions & 594920.14 & 598809.23 & 606587.42 & 610476.51 \\ \hline \multicolumn{5}{c}{**Heat processing (\(10^{2}\) kJ)**} \\ \hline SO\({}_{2}\) emissions & 689.20 & 691.28 & 695.45 & 697.53 \\ NO\(\chi\) emissions & 497.49 & 499.95 & 504.85 & 507.30 \\ PM emissions & 87.16 & 87.41 & 87.93 & 88.18 \\ CO\({}_{2}\) emissions & 594920.14 & 598809.23 & 606587.42 & 610476.51 \\ \hline \multicolumn{5}{c}{**Heat processing (\(10^{2}\) kJ)**} \\ \hline  & 780.64 & 781.64 & 783.64 & 784.64 \\ \hline \multicolumn{5}{c}{**Coke processing (\(10^{6}\) ton)**} \\ \hline  & 77.24 & 77.74 & 78.74 & 79.24 \\ \hline \multicolumn{5}{c}{**Import electricity amounts (\(10^{6}\) kWh, h = 1 )**} \\ \hline  & 194.72 & 195.44 & 196.88 & 197.60 \\ \hline \multicolumn{5}{c}{**Air pollutants and CO\({}_{2}\) from energy processing and electricity generation (\(10^{3}\) ton)**} \\ \hline SO\({}_{2}\) emissions & 688.19 & 690.27 & 694.44 & 696.52 \\ NO\(\chi\) emissions & 501.10 & 503.75 & 509.05 & 511.70 \\ PM emissions & 86.79 & 87.05 & 87.56 & 87.81 \\ CO\({}_{2}\) emissions & 612669.67 & 671713.59 & 626001.42 & 630445.34 \\ \hline \hline \end{tabular}
\end{table} 
Table 5: **(a)** Optimized solutions under different \(\alpha\) levels in 2020.