As Fig. 10, but for the signal-to-noise |$q_{\mathrm{obs}}$|⁠. Assuming a relativistic tSZ SED produces |$q_{\mathrm{obs}}$| values that are fully in agreement with those obtained with the non-relativistic SED. The impact of the tSZ relativistic corrections on the signal-to-noise measurements in our catalogues is therefore negligible.