Mass-loss rates per unit surface area as a function of X-ray flux for the Parker (left) and CS (right) models are plotted in blue. Values for these mass-loss rates can be found in Appendix A. The mass-loss rates and the wind dividing line of Wood et al. (2014) are overplotted in red (see their Fig. 4). These authors fit a power law (red solid line), , to their data points below the wind dividing line. For our data, we find power laws of and for the Parker and CS models respectively (solid blue lines). If we use our entire sample, we find and respectively. We note that our quoted errors are in the fit only.