Mass functions of the different distributions of cosmic string loops used in this work. Solid, dashed, and dash-dotted red curves show the mass functions of loops used in our three string tension Gμ = 10⁻⁸ (CS-8) simulations. Blue curves show the same for our Gμ = 10⁻¹⁰ (CS-10) runs; the distributions are identical to the Gμ = 10⁻⁸ loops, with masses scaled down by a factor of 1/100 (see Sect. 2.1). Poisson errors are shown as shaded error bands in the corresponding colors.