|   Year  |       Parameter/Function  |       pH (SU)  |       EC (µs/cm)  |       
  |       
  |       Cl− (mg/l)  |       Ca2+ (mg/l)  |       Mg2+ (mg/l)  |       Na+ (mg/l)  |       K+ (mg/l)  |    
|   2012  |       Mean  |       7.9  |       901.1  |       172.4  |       140.1  |       98.7  |       70.7  |       29.5  |       61.1  |       7.7  |    
|   
  |       Max  |       8.4  |       1150.0  |       272.0  |       222.3  |       137.0  |       90.2  |       40.3  |       80.2  |       10.7  |    
|   
  |       Min  |       7.6  |       704.0  |       123.0  |       24.8  |       70.0  |       52.6  |       22.7  |       47.4  |       5.3  |    
|   2013  |       Mean  |       8.4  |       538.4  |       123.2  |       86.8  |       52.8  |       55.6  |       15.5  |       34.2  |       5.0  |    
|   
  |       Max  |       9.3  |       1033.0  |       157.0  |       261.0  |       113.0  |       94.5  |       40.5  |       74.3  |       7.1  |    
|   
  |       Min  |       7.7  |       213.0  |       88.2  |       7.6  |       36.0  |       10.6  |       9.9  |       23.2  |       3.5  |    
|   2014  |       Mean  |       8.2  |       594.0  |       143.7  |       98.8  |       48.8  |       48.2  |       15.9  |       36.9  |       7.0  |    
|   
  |       Max  |       8.9  |       657.0  |       168.0  |       142.5  |       79.4  |       66.5  |       28.4  |       42.6  |       16.8  |    
|   
  |       Min  |       7.5  |       501.0  |       94.2  |       42.6  |       11.8  |       10.0  |       9.6  |       31.7  |       2.9  |    
|   2015  |       Mean  |       8.1  |       587.9  |       146.4  |       89.9  |       53.6  |       51.9  |       15.0  |       41.1  |       7.2  |    
|   
  |       Max  |       8.4  |       644.0  |       187.0  |       120.2  |       67.0  |       64.9  |       19.6  |       51.8  |       10.8  |    
|   
  |       Min  |       7.5  |       501.0  |       126.0  |       61.9  |       38.0  |       46.6  |       8.2  |       31.4  |       5.1  |