## 4 Conclusions

Table 5: Confusion Matrices (CMs) expressing the results of the Discrimination Functions (DFs) of the Oil-Slick Discrimination Algorithm from Set.2—i.e., all variables (16 or 19—see Phase 5: Section 3.5.1—Figure 3 and Table 3) without the dendrogram selection (no UPGMA: Unweighted Pair Group Method with Arithmetic Mean) but with the application of the PCA (Principal Component Analysis—see Phase 6: Section 3.6—Table 4). Note that NLT2 and NLT3 have the same outcome. \begin{table} \begin{tabular}{|c|c|c|c|c|} \hline
**CM.1** & DF Oil Seep & DF Oil Spill & Total Real & **CM.1** & DF Oil Seep & DF Oil Spill & Total Real \\ Oil Seep Real & **78.79\%** & **21.39\%** & 100.0\% & Oil Seep Real & **1454** & 540 & **1994** \\ Oil Spill Real & **47.79\%** & **52.39\%** & 100.0\% & Oil Spill Real & 987 & **1581** & **2568** \\ Oil Seep Real & **56.2\%** & **24.0\%** & 1.01\% & Oil Seep Real & **59.6\%** & **25.5\%** \\ Oil Seep Real & **43.8\%** & **26.0\%** & Oil Spill Real & **40.4\%** & **74.5\%** & **27.0\%** \\ Total DF & 100.0\% & 100.0\% & 100.0\% & Total DF & 100.0\% & 100.0\% \\ \hline \end{tabular} \begin{tabular}{|c|c|c|c|c|c|} \hline
**CM.2** & DF Oil Seep & DF Oil Spill & Total Real & **CM.2** & DF Oil Seep & DF Oil Spill & Total Real \\ Oil Seep Real & **78.79\%** & **21.39\%** & 100.0\% & Oil Seep Real & **72.99\%** & **27.1\%** & 100.0\% \\ Oil Spill Real & **47.79\%** & **52.39\%** & 100.0\% & Oil Spill Real & **38.4\%** & **61.69\%** & 100.0\% \\ \hline \end{tabular} \begin{tabular}{|c|c|c|c|c|c|} \hline
**CM.3** & DF Oil Seep & DF Oil Spill & **70.1\%** & **70.1\%** & **70.1\%** \\ Oil Seep Real & **56.2\%** & **24.0\%** & Oil Seep Real & **59.6\%** & **25.5\%** & **70.1\%** \\ Oil Spill Real & **43.8\%** & **26.0\%** & Oil Spill Real & **40.4\%** & **74.5\%** & **72.0\%** \\ Total DF & 100.0\% & 100.0\% & 100.0\% & Total DF & 100.0\% & 100.0\% & 100.0\% \\ \hline \end{tabular} \begin{tabular}{|c|c|c|c|c|} \hline
**CM.1** & DF Oil Seep & DF Oil Spill & Total Real & **CM.1** & DF Oil Seep & DF Oil Spill & Total Real \\ Oil Seep Real & **1296** & 698 & **1994** & Oil Seep Real & **1296** & 698 & **1994** \\ Oil Spill Real & 739 & **1829** & **2568** & Oil Spill Real & 739 & **1829** & **2568** \\ Total DF & **2035** & **2527** & **4562** & Total DF & **2035** & **2527** & **4562** \\ \hline \end{tabular} \begin{tabular}{|c|c|c|c|c|} \hline
**CM.2** & DF Oil Seep & DF Oil Spill & Total Real & **CM.2** & DF Oil Seep & DF Oil Spill & Total Real \\ Oil Seep Real & **65.0\%** & **35.0\%** & 100.0\% & Oil Seep Real & **65.0\%** & **35.0\%** & 100.0\% \\ Oil Spill Real & **28.8\%** & **73.29\%** & 100.0\% & Oil Spill Real & **28.8\%** & **71.2\%** & 100.0\% \\ \hline \end{tabular} \begin{tabular}{|c|c|c|c|c|} \hline
**CM.3** & DF Oil Seep & DF Oil Spill & **70.1\%** & **70.1\%** & **70.1\%** \\ Oil Seep Real & **63.2\%** & **27.6\%** & Oil Seep Real & **63.2\%** & **27.6\%** & **72.3\%** \\ Oil Spill Real & **36.3\%** & **72.4\%** & **72.4\%** & Oil Spill Real & **36.3\%** & **72.4\%** & 72.6\%** \\ Total DF & 100.0\% & 100.0\% & 100.0\% & Total DF & 100.0\% & 100.0\% & 100.0\% \\ \hline \end{tabular} \begin{tabular}{|c|c|c|c|} \hline
**CM.1** & DF Oil Seep & DF Oil Spill & Total Real & **CM.2** & DF Oil Seep & DF Oil Spill & Total Real \\ Oil Seep Real & **1426** & 568 & **1994** & Oil Seep Real & **1761** & 233 & **1994** \\ Oil Spill Real & 947 & **1621** & **2568** & Oil Spill Real & 1733 & **835** & **2568** \\ Total DF & **2373** & **2189** & **4562** & Total DF & **3494** & **1068** & **4562** \\ \hline \end{tabular} \begin{tabular}{|c|c|c|c|} \hline
**CM.2** & DF Oil Seep & DF Oil Spill & Total Real & **CM.2** & DF Oil Seep & DF Oil Spill & Total Real \\ Oil Seep Real & **71.5\%** & **28.5\%** & 100.0\% & Oil Seep Real & **88.3\%** & **11.7\%** & 100.0\% \\ Oil Spill Real & **36.9\%** & **63.3\%** & 100.0\% & Oil Spill Real & **67.5\%** & **32.5\%** & 100.0\% \\ \hline \end{tabular}