Atmospheres of the planets in the sample. Low-potential planets are shown on the lefthand side and high-potential planets on the righthand side. Time averaged profiles are shown for high-potential planets. Symbols in the lower panela) are the same as in Fig. 5; additionally the height where the atmospheres become collisionless for neutral hydrogen are marked (triangles). On each side the planets are sorted from high (GJ 3470 b/WASP-12 b) to low (HD 97658 b/CoRoT-2 b) mass-loss rates, which is also referenced by a color scheme from green to blue.