## 3 Results
### Results of Statistical Analysis for the NiTi-1 alloy
\begin{table}
\begin{tabular}{c c c c c c} \hline  & \multicolumn{4}{c}{**Air**} \\ \hline
**Lower Bound** & **Upper Bound** & **Empirical CDF of \(\mathbf{c_{1}}\)** & \(\mathbf{F_{\mathsf{a_{1}}^{(l)}}}\) & \(\mathbf{F_{\mathsf{a_{1}}^{(f)}}}\) & \(\mathbf{F_{\mathsf{a_{1}}^{(b)}}}\) \\ \hline
2 & 2.5045 & 0.148 & 0.18829 & 0.17834 & 0.15185 \\ \hline
2.5045 & 3.009 & 0.481 & 0.46397 & 0.46123 & 0.46115 \\ \hline
3.009 & 3.5135 & 0.722 & 0.65073 & 0.64855 & 0.65065 \\ \hline
3.5135 & 4.018 & 0.741 & 0.76227 & 0.75993 & 0.76045 \\ \hline
4.018 & 4.5225 & 0.741 & 0.83003 & 0.82808 & 0.82825 \\ \hline
4.5225 & 5.027 & 0.778 & 0.87318 & 0.87184 & 0.87245 \\ \hline
5.027 & 5.5315 & 0.778 & 0.90201 & 0.90128 & 0.90254 \\ \hline
5.5315 & 6.036 & 0.852 & 0.92209 & 0.92188 & 0.92376 \\ \hline
6.036 & 6.5405 & 0.944 & 0.93660 & 0.93680 & 0.93917 \\ \hline
6.5405 & 7.045 & 1.000 & 0.94741 & 0.94792 & 0.95065 \\ \hline \multicolumn{5}{c}{**Tide**} \\ \hline
**Lower Bound** & **Upper Bound** & **Empirical CDF of \(\mathbf{c_{1}}\)** & \(\mathbf{F_{\mathsf{t_{1}}^{(b)}}^{(b)}}\) & \(\mathbf{F_{\mathsf{t_{1}}^{(f)}}}\) & \(\mathbf{F_{\mathsf{t_{1}}^{(d)}}}\) \\ \hline
1 & 1.743333 & 0.017 & 0.00959 & 0.00808 & 0.00776 \\ \hline
1.743333 & 2.486667 & 0.150 & 0.20910 & 0.22763 & 0.22412 \\ \hline
2.486667 & 3.23 & 0.583 & 0.56744 & 0.54977 & 0.54309 \\ \hline
3.23 & 3.973333 & 0.750 & 0.75779 & 0.75070 & 0.74214 \\ \hline
3.973333 & 4.716667 & 0.783 & 0.85150 & 0.85385 & 0.84838 \\ \hline
4.716667 & 5.46 & 0.833 & 0.90228 & 0.90797 & 0.90588 \\ \hline
5.46 & 6.203333 & 0.867 & 0.93218 & 0.93835 & 0.93857 \\ \hline
6.203333 & 6.946667 & 0.983 & 0.95094 & 0.95657 & 0.95815 \\ \hline
6.946667 & 7.69 & 0.983 & 0.96332 & 0.96815 & 0.97045 \\ \hline
7.69 & 8.433333 & 1.000 & 0.97183 & 0.97587 & 0.97848 \\ \hline \multicolumn{5}{c}{**Sea**} \\ \hline
**Lower Bound** & **Upper Bound** & **Empirical CDF of \(\mathbf{c_{1}}\)** & \(\mathbf{F_{\mathsf{s_{1}}^{(g)}}^{(g)}}\) & \(\mathbf{F_{\mathsf{s_{1}}^{(d)}}}\) & \(\mathbf{F_{\mathsf{s_{1}}^{(gp)}}}\) \\ \hline
0 & 4.75275 & 0.000 & 0.03439 & 0.02958 & 0.02285 \\ \hline
4.75275 & 9.5055 & 0.179 & 0.11100 & 0.10975 & 0.13059 \\ \hline
9.5055 & 14.25825 & 0.254 & 0.24588 & 0.23534 & 0.29151 \\ \hline
14.25825 & 19.011 & 0.373 & 0.41733 & 0.39816 & 0.44024 \\ \hline
19.011 & 23.76375 & 0.537 & 0.58871 & 0.57682 & 0.57593 \\ \hline
23.76375 & 28.5165 & 0.761 & 0.73224 & 0.73579 & 0.69754 \\ \hline
28.5165 & 33.26925 & 0.851 & 0.83765 & 0.84853 & 0.80362 \\ \hline
33.26925 & 38.022 & 0.896 & 0.90769 & 0.91581 & 0.89213 \\ \hline
38.022 & 42.77475 & 0.910 & 0.95062 & 0.95270 & 0.95972 \\ \hline
42.77475 & 47.5275 & 1.000 & 0.97517 & 0.97259 & 0.99852 \\ \hline \end{tabular}
\end{table} 
Table 10: The empirical values and the values of CDF for the three best-fitted distributions for \(c_{1}\) concerning NiTi-1. The similarity of empirical data related to air and tide influence on the NiTi-1 alloy can be observed in Figures 11 and 12. The histograms of these two datasets have almost the same shape. It can be seen that the empirical data for the corrosion rate in the case of the NiTi-1 alloy and the influence of air and tide are unimodal, and show highly skewed tendencies with heavy right tails. Additionally, these two figures show that all fitted three-parameter distributions follow the shape of the corrosion empirical data in the air and tide environments. The corrosion rate that occurred under the influence of air on NiTi-1 had initially increasing values, while later it decreased, so the three-parameter Log-logistic distribution proved to be the most favourable theoretical distribution. Considering that the Burr distribution is a generalisation of the Log-Logistics distribution, it becomes clear why they follow this empirical data best in the case of the NiTi-1 alloy under air influence. The Burr distribution is a flexible distribution that adapts easily and well to complex changes in empirical data, especially from the point of view of skewness and kurtosis.