Time series at the Earth for the radial velocity values given in [km s⁻¹] and number density given in [cm⁻³]. Both, the CME tracing function and the divergence of V is used for the AMR criteria. The black curve shows the observed values, the blue line corresponds to the original EUHFORIA result from the high-resolution simulation, and the orange, green, cyan, grey, yellow and purple lines correspond, respectively, to the AMR level 2, 3, 4, and 5 simulations, the middle-resolution simulation without AMR performed on an equidistant grid without stretching, and the middle-resolution run without AMR with grid stretching applied to the computational domain. The horizontal axis shows the time evolution.