RV time series of 2000 solar spectra obtained with Solar-SONG, and modeled and computed by pyodine. Left: the measured RVs along with a fitted trend to correct for relative movement of the observatory with respect to the sun. Right: detrended RVs along with a fitted LOWESS filter (window size 0.8% of the whole time series) to correct for the solar p-mode oscillations (top), and smoothed RVs (bottom).