Radial velocity time series for the K2-32 planetary system. Top and middle panels: full radial velocity dataset including observations from HARPS (red symbols), HIRES (blue symbols), and PFS (green symbols). The median model inferred with PASTIS including the four planets and the GP (see Sect. 4) is shown in black with 68.7% (dark grey) and 95% (light grey) confidence intervals as shaded regions. Bottom panel: residuals of the radial velocity modelling for the full dataset. The white noise jitter term has been quadratically added to the radial velocity uncertainties in all panels.