Different S/N estimates of the spectra from the MASCARA-1 b observations as discussed in Section 3.4. The left panel shows the median S/N for the different frames as given by both pipelines and the CRIRES+ ETC. The S/N from the ETC is order-wise rescaled such that the flux given by the ETC matches the observed flux. The right panel shows the average S/N for all orders, with a smoothing applied for clarity.