JUN-07 JUN-08 JUN-09 JUN-10 JUN-11 JUN-12 JUN-13
ELS Zone (1)              
Total Hardness (mg/L as CaCO3) (2) 170 171 167 166 169 162 162
pH (pH) (3) 8.0 8.0 8.0 8.0 7.8 7.8 7.7
Temperature (°C) -- -- -- -- -- -- --
Total Chlorine Residual (mg/L) (4) 1.99 2.00 2.03 2.01 2.04 2.06 2.05
Alkalinity (mg/L as CaCO3) (5) 114 114 113 113 120 118 112
Conductivity (µS/cm) (6) 473 453 435 449 458 440 437
Caustic Soda (mg/L) (7) 34.8 27.9 24.9 32.5 33.4 28.0 29.2