Comparison of the Rosetta pressure proxy calculated using the peak selection method (red line) and the propagated OMNI lasso pressure (dark blue line) at comet 67P, between late April 2015 and January 2016. The pressure calculated using the peak selection method is averaged to remove the rapid solar wind fluctuations due to the temporal resolution of the data. The ICMEs hitting either Earth or comet 67P are marked by red crosses on the time axes.