Sequences of models in which the parameter κ has the values of 80, 40, 20, 10, and 5. The larger κ, the closer the model to standard models with a Maxwell-Boltzmann electron energy distribution. These κ sequences differ in their metallicity Z (expressed in Z_⊙ units in the line color legend). The dashed magenta line represents a metallicity sequence of standard photoionization models (κ = ∞) (same sequence as in Fig. 2). The light gray arrow illustrates the increase in the T_S   iii and T_O   iii temperatures when enhanced Hi excitation is left out from the calculations of the model with Z = 0.01 Z_⊙ and κ = 5. In all calculations, we adopted U = 0.01 and an SED consisting of a zero-age instantaneous starburst model from M03 with M_sup = 100    M_⊙.