Upper panel: mass loss rate for a sample of transiting planets vs. their mass (see the text). Open diamonds indicate the loss rate induced by EUV flux only, while filled dots indicate the case when the contribution by non-thermal electrons accelerated at the boundary of the planetary magnetosphere is added. The parameter s = 2.0 specifies the radial dependence of the stellar magnetic field according to Eq. (3). Middle panel: the same as the upper panel, but for s = 2.5. Lower panel: the same as the upper panel, but for s = 3.0.