Radial velocity (RV) orbital solution for NGC 2004#115 based on velocity estimates from the metal lines in its spectrum. Left-most panel: illustrates the fit using the VLT-FLAMES data only. Central panel: how the fit, now determined using both VLT-FLAMES (black points) and SALT-HRS (red points) data, deteriorates when we include both datasets. Rightmost panel: fit to the VLT-FLAMES data taken within the final week of that observing campaign, and fit parameters for this solution are listed in Table 1. The scales differ from panel to panel, in particular note the change in the scale of the O−C plots.