Duration of CME wake as a function of D, based on EUHFORIA simulations. Left: duration of the CME wake since the end of the magnetic ejecta for the magnetic field, density, and temperature, as a function of the heliocentric distance D (indicated by the solid dots). Right: ratio between the duration of the CME wake and of the magnetic ejecta as a function of the heliocentric distance, D, for the same quantities (indicated by the solid lines).