Variation in the average growth rates, γ with the resistivities for (a) Rutherford, (b) Post-Rutherford, and (c) entire nonlinear regions. The growth rates are scaled with respect to the Alfvén timescale. The solid lines represent the linear fit of the growth rates vs. η in the log-log scale. The values of the slope and the correlation coefficients are noted in the corresponding figures.