Value of f_NL for each mass bin, assuming b_ϕ is described by Eq. (13) with p = 1. Blue and orange symbols show results for the Gaussian and non-Gaussian simulations, respectively. In contrast, green symbols show the matching (difference) between them, where we used Eq. (16) for obtaining b_ϕf_NL and Eq. (17) for its uncertainty. Dashed lines show the input f_NL values for each simulation. For the mass bins 2 and 3, we have that b₁ − 1 ≤ 0.1 and hence b_ϕ ∼ 0. This value of b_ϕ explains the large error bars compared to the other mass bins. In solid circles, we use the best fit to Eq. (15) for estimating the power spectrum variance; in rings, we use the extrapolation method.