a) Central velocities of the disk wind components from the decomposition of Hα line profiles, as plotted over the orbital phases of GW Ori B. The velocity is in the rest frame of GW Ori. We divide the orbital phases into different bins and show the mean value of central velocities in each bin with a filled square and its standard deviation with an error bar. b) EWs of the disk wind components, as shown in panel a), plotted over the orbital phases of GW Ori B. We divide the orbital phases into different bins and show the mean value of EWs in each bin with a filled square and its standard deviation with an error bar.