Scatter plot of measured phase speed (v_ph) vs. calculated speed (λ/P) for the streamer wave events from observational studies and from simulations. Blue circles correspond to the events from Decraemer et al. (2020) and magenta circles correspond to the events from Table 2. Diamonds correspond to the modelling results, where green diamonds represent SSW variants, grey diamonds represent MSW variants, and blue diamonds represent FSW variants. The red line marks the equal values of the calculated and measured phase speed. The blue dashed line corresponds to a fit with a constant solar background wind (averaged difference between v_ph and λ/P). Solid lines correspond to the fit λ/P = v_ph − v_SW, where v_SW represents the averaged solar wind speed estimated from the observations or calculated from the modelling setup. Dotted lines correspond to the fit λ/P = v_ph − αv_SW, where αv_SW represents the averaged difference between v_ph and λ/P.