Example of the calibration factor evolution at 38.75 GHz during the observing session on Oct. 24, 2021. The black dots correspond to the (sub-)averaged calibration factor measurements Γ_c, i. The blue line and blue squares indicate the simple moving average (SMA) interpolated calibration factor Γ_SMA, i (see Eq. (1)), as used in the final analysis. The dark gray area represents the calibrator scatter σ_sc, ν, while the light gray hashed area represents the total calibration uncertainty σ_cal, including the model uncertainty σ_model and σ_sc, ν.