Table 3: TSI and corresponding values of Chla, NO_{2}N, and SDD computed using Model B. It is noticeable that this model gives negative numbers (shown as “—” dash), which implies the nonapplicability of this model for NO_{2}N concentrations less than 0.13 g L^{−1}. Model B shows slight improvement over Model A; however, the values of computed indices are underestimated in this model.  
