Comparison of halo mass functions inferred from the original runs presented in this paper to those obtained from the higher-resolution (HR) runs performed as a convergence test (see text for details) at redshifts z = 8, 12, and 14. Solid red and black curves indicate the halo mass functions from the original Gμ = 10⁻⁸ and ΛCDM runs, respectively. Dashed orange and dark blue curves show halo mass functions from the HR runs using the Gμ = 10⁻⁸ and ΛCDM models, respectively. Shaded error bands in the corresponding colors indicate Poisson errors, while vertical-dash dotted lines indicate the first 95% complete halo mass bin (see Sect. 3.1; Fig. 1).