## 3 Results and Discussion
### Statistical Analysis
\begin{table}
\begin{tabular}{c c c c c c c c c c c c c c c c c c c c c c c c c} \hline \hline  & \multicolumn{10}{c}{**2013**} & \multicolumn{10}{c}{**2016**} & \multicolumn{10}{c}{**2019**} \\ \cline{2-13}  & **Ca2\({}^{\text{th}}\)** & **Mg3\({}^{\text{th}}\)** & **Na\({}^{\text{th}}\)** & **K\({}^{\text{th}}\)** & **HCO3\({}^{-}\)** & **Cl\({}^{-}\)** & **SO\({}_{\text{d}}\)** & **Cl\({}^{\text{th}}\)** & **Mg\({}^{\text{th}}\)** & **Na\({}^{\text{th}}\)** & **K\({}^{\text{th}}\)** & **HCO3\({}^{-}\)** & **Cl\({}^{-}\)** & **SO\({}_{\text{d}}\)** & **Cl\({}^{\text{th}}\)** & **Cl\({}^{\text{th}}\)** & **Cl\({}^{\text{th}}\)** & **Mg\({}^{\text{th}}\)** & **Na\({}^{\text{th}}\)** & **K\({}^{\text{th}}\)** & **HCO3\({}^{-}\)** & **Cl\({}^{\text{th}}\)** & **SO\({}_{\text{d}}\)** \\ \hline
**P1** & 193.4 & 122.8 & 828.7 & 4.1 & 170.1 & 1225.5 & 1174.9 & 195.9 & 90.3 & 583.7 & 20.4 & 359.6 & 969.5 & 578.8 & 275 & 120.5 & 506.1 & 45.1 & 480 & 555 & 257.5 \\ \hline
**P2** & 351.5 & 216.3 & 710.2 & 30.3 & 148.8 & 1464.1 & 1119.4 & 146.8 & 72.4 & 412.8 & 23.6 & 390.4 & 542.53 & 476.2 & 102.7 & 73.4 & 168.9 & 12.3 & 240 & 420 & 238 \\ \hline
**P3** & 164.7 & 98.27 & 733.5 & 3.3 & 158.6 & 1024.5 & 545.5 & 97.1 & 44.8 & 217.9 & 18.6 & 488 & 235.4 & 242.6 & 199.8 & 80.4 & 585.2 & 16.3 & 160 & 555 & 210.1 \\ \hline
**P4** & 159.3 & 78.74 & 220.7 & 20.9 & 109.8 & 723.9 & 65 & 481.7 & 195.8 & 476.5 & 30.8 & 616.1 & 1467.5 & 239.1 & 159.2 & 90.3 & 270.5 & 12.4 & 320 & 435 & 389.5 \\ \hline
**P5** & 106.7 & 342.5 & 213.9 & 5.7 & 0 & 377.4 & 360.3 & 360.2 & 235 & 476.5 & 5.8 & 451.4 & 13684 & 1190.1 & 380.4 & 273 & 1482 & 18.1 & 400 & 1005 & 272.8 \\ \hline
**P6** & 383.6 & 90.83 & 143.5 & 3.1 & 166.3 & 416.7 & 950.1 & 272.6 & 73.4 & 476.5 & 17.9 & 311.1 & 625 & 171.8 & 404.6 & 188.6 & 1092 & 19.2 & 360 & 885 & 637.2 \\ \hline
**P7** & 199.1 & 34.5 & 129.8 & 2.6 & 145.1 & 390.5 & 93.3 & 125.9 & 32.2 & 476.5 & 3.8 & 244 & 161.9 & 61.9 & 374.1 & 188.2 & 601.3 & 13.5 & 280 & 585 & 249.1 \\ \hline
**P8** & 176.7 & 46.83 & 89.6 & 4.6 & 265.9 & 241.85 & 102.8 & 28.6 & 59.6 & 476.5 & 3 & 359.9 & 583.4 & 427.5 & 1013 & 167.4 & 2788 & 13.7 & 600 & 900 & 1480.1 \\ \hline
**P9** & 400.1 & 184 & 725.2 & 21.5 & 480.6 & 1996.7 & 562.8 & 107.5 & 41 & 476.5 & 9.6 & 353.8 & 233.3 & 83.9 & 335 & 203 & 623 & 17.3 & 320 & 915 & 207.4 \\ \hline
**P10** & 705.5 & 183.4 & 458.8 & 6.6 & 195.2 & 1732.15 & 970.49 & 224.05 & 98.2 & 366.7 & 2 & 524.6 & 439.6 & 678.9 & 138.9 & 60.3 & 231.7 & 10.6 & 240 & 155 & 172.6 \\ \hline
**P11** & 197.9 & 63.18 & 253 & 4.8 & 158.6 & 102.9 & 472.7 & 869.7 & 254 & 2883.3 & 124 & 317.2 & 5564.6 & 1621.7 & 144.1 & 64.8 & 201.8 & 11.8 & 240 & 145 & 319.85 \\ \hline
**P12** & 161.3 & 71.88 & 219.3 & 3.7 & 220.82 & 482.06 & 393.7 & 256.1 & 67 & 150.8 & 3 & 347.7 & 307.4 & 499.7 & 104.5 & 89 & 362.6 & 9.5 & 280 & 140 & 345.8 \\ \hline
**P13** & 438.9 & 81.93 & 260.5 & 5.09 & 201.3 & 594.81 & 836.7 & 172.8 & 58.6 & 217.4 & 3.3 & 427 & 365.2 & 248.6 & 223.3 & 69.9 & 187.3 & 7 & 320 & 111 & 625.3 \\ \hline
**P14** & 118.5 & 99.95 & 428.2 & 15 & 376.9 & 768.03 & 364.9 & 348.9 & 179.4 & 872.6 & 8.1 & 475.8 & 1652.7 & 953.9 & & & & & & & & 280 & 205 & 1285 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Hydrogochemical data of Mørng shallow groundwater (mg/1). Figure 4: Piper diagrams (2013, 2016, 2019). (a) Piper diagram for 2013; (b) Piper diagram for 2016; (c) Piper diagram for 2019. Figure 5: (a) Variable spaces and cluster analysis deduced from the geochemical PCA for 2013. (b) Variable spaces and cluster analysis deduced from the geochemical PCA for 2016. (c) Variable spaces and cluster analysis deduced from the geochemical PCA for 2019.The correlation of the samples of Morang indicated that the contents of sodium, magnesium, and calcium are highly positively correlated with the sum of cations, and on the other hand, the anions \(\mathrm{Cl^{+}}\), \(\mathrm{SO^{4-}}\), and \(\mathrm{HCO_{3}}\), have a positive correlation with respect to the sum of the anions, with a correlation coefficient (R).