## 4 Results Comparison and Discussion  
In order to further discuss the trend of the obtained results and confirming that the followed design update strategy is leading to the definition of a sound design for the TC region of the WCLL COB segment, the following Figures 15 and 16, showing a compact view of the design criteria verification carried out in for the \"TC region-mod\", \"TC region-mod+\" and \"TC region-mod++\" configurations, are reported. In particular, attention is paid to the criteria against the IED (\(\rm{P_{m}}/\rm{S_{m}}\)), the IPI (\(\rm{(P_{m}+P_{b})/K_{eff}\times S_{m}}\)) and the IPI (\(\rm{(P_{m}+Q_{m})/S_{em}}\)) since they are not totally fulfilled within SPs in both NO and OP analyses.  
\begin{table}
\begin{tabular}{c c c c c} \hline
**Path** & \(\rm{P_{m}/S_{m}}\) & \(\rm{(P_{m}+P_{b})/(K_{eff}\times S_{m})}\) & \(\rm{(P_{m}+Q_{m})/S_{em}}\) & \(\rm{(P_{m}+P_{b}+Q+F)/S_{et}}\) \\ \hline TC\_1.a & 0.031 & 0.042 & 0.281 & 0.109 \\ TC\_1.b & 0.088 & 0.103 & 0.482 & 0.239 \\ TC\_1.c & 0.092 & 0.103 & 0.072 & 0.165 \\ TC\_2.a & 0.028 & 0.052 & 0.348 & 0.105 \\ TC\_2.b & 0.112 & 0.120 & 0.465 & 0.216 \\ TC\_2.c & 0.095 & 0.113 & 0.039 & 0.150 \\ \hline \end{tabular}
\end{table}
Table 10: RCC-MRx Level A criteria verification within TC domain.  
\begin{table}
\begin{tabular}{c c c c c} \hline
**Path** & \(\rm{P_{m}/S_{m}}\) & \(\rm{(P_{m}+P_{b})/(K_{eff}\times S_{m})}\) & \(\rm{(P_{m}+Q_{m})/S_{em}}\) & \(\rm{(P_{m}+P_{b}+Q+F)/S_{et}}\) \\ \hline SP\_PR\_1.1 & 0.434 & 0.363 & 0.817 & 0.135 \\ SP\_PR\_1.2 & 0.101 & 0.099 & 0.756 & 0.151 \\ SP\_PR\_2.1 & 0.426 & 0.307 & 0.824 & 0.126 \\ SP\_PR\_2.2 & 0.158 & 0.120 & 0.844 & 0.148 \\ SP\_PR\_3.1 & 0.277 & 0.189 & 0.606 & 0.104 \\ SP\_PR\_3.2 & 0.160 & 0.113 & 0.391 & 0.077 \\ SP\_PR\_3.3 & 0.188 & 0.133 & 0.900 & 0.211 \\ SP\_TR\_1.1 & 0.086 & 0.115 & 1.033 & 0.200 \\ SP\_TR\_1.2 & 0.109 & 0.215 & 0.997 & 0.182 \\ SP\_TR\_1.3 & 0.263 & 0.208 & 0.555 & 0.139 \\ SP\_TR\_1.4 & 0.159 & 1.472 & 0.709 & 0.219 \\ SP\_TR\_1.5 & 0.289 & 1.375 & 0.529 & 0.187 \\ SP\_TR\_1.6 & 0.577 & 0.476 & 1.233 & 0.273 \\ SP\_TR\_2.1 & 0.137 & 0.113 & 1.261 & 0.223 \\ SP\_TR\_2.2 & 0.164 & 0.150 & 1.036 & 0.178 \\ SP\_TR\_2.3 & 0.400 & 0.278 & 0.749 & 0.181 \\ SP\_TR\_2.4 & 0.237 & 0.186 & 1.356 & 0.276 \\ \hline \end{tabular}
\end{table}
Table 11: RCC-MRx Level A criteria verification within FW-SWs domain.  
\begin{table}
\begin{tabular}{c c c c c} \hline
**Path** & \(\rm{P_{m}/S_{m}}\) & \(\rm{(P_{m}+P_{b})/(K_{eff}\times S_{m})}\) & \(\rm{(P_{m}+Q_{m})/S_{em}}\) & \(\rm{(P_{m}+P_{b}+Q+F)/S_{et}}\) \\ \hline FV\_1.a & 0.175 & 0.156 & 0.309 & 0.167 \\ FV\_1.b & 0.281 & 0.193 & 0.596 & 0.213 \\ FV\_1.c & 0.304 & 0.378 & 0.427 & 0.328 \\ FV\_1.d & 0.193 & 0.148 & 0.483 & 0.190 \\ FV\_1.e & 0.255 & 0.197 & 0.431 & 0.176 \\ FV\_2.a & 0.039 & 0.048 & 0.210 & 0.140 \\ FV\_2.b & 0.096 & 0.069 & 0.573 & 0.168 \\ FV\_2.c & 0.066 & 0.062 & 0.248 & 0.133 \\ \hline \end{tabular}
\end{table}
Table 12: RCC-MRx Level A criteria verification within SPs domain.  
Figure 16: Trends of Level D criteria verification for SPs.  
Figure 15: Trends of Level A criteria verification for SPs.  
Looking at the pictures, it can be noted that, for a given criterion and for a given path, the ratio obtained from the \"TC region-mod++\" analysis is lower than, or, at maximum, equal to, the analogous value obtained from \"TC region-mod\" analysis. This simple observation allows demonstrating that the followed design improvement strategy is promising, and it is worthy to be pursued as a follow up of the research activity herein presented.