Comparison of the type II heights, obtained with the density models of 1–2×Newkirk (dashed lines) and Cairns et al. (2009; solid line), applied to the frequencies provided by the exponential fit on the intensity maxima of the lower-frequency branch, with the heights of the EUV wave fronts (five data points from SDO/AIA 211 Å, limited by the field of view (FOV) of the instrument, and one data point from SoHO/EIT 195 Å, at the end of the type II emission), for event 1. The models of 1×Newkirk and of Cairns et al. (2009) provided similar results for event 1.