Total cold gas mass within R₁₀ of all satellites (M_scg) upon the total halo cold gas mass (M_cg) vs. stellar mass of the most massive satellite, M_*mms (in M_⊙). The left, middle, and right panels show log M_*C = 10.160–10.405, log M_*C = 10.453–10.715, and log M_*C = 10.931–11.288 bin halos. As in earlier figures, respective quartiles and 1σ ranges are marked. Since some satellite populations are totally devoid of any cold gas within their R₁₀ regions, we set their y-axis values to 10⁻⁵. This figure helps us directly quantify the ratio of the total halo cold gas mass coming from the R₁₀ regions of the satellite population. While the median contributions from satellites toward the host cold gas mass are <10%, some individual cases show as much as ∼ 70%–80% of the halo cold gas associated with their corresponding satellite populations.