Time series of solar wind parameters for day of year (DoY) 90−150 in 2005. The following solar wind parameters are shown (from top to bottom panel): proton speed v_p, proton density n_p, proton temperature T_p, magnetic field strength B, oxygen charge-state ratio , (decadic) logarithm of the proton-proton collisional age log a_col, p-p, and in situ magnetic polarity. The colored shading highlights different periods of interest. The color of the data points indicates the solar wind type based on the Xu & Borovsky (2015) scheme. ICMEs are based on available ICME lists. The in situ magnetic polarity is determined by comparing the nominal magnetic field direction based on the Parker spiral to the in situ measured angle. If the absolute difference between these two directions is greater than 90°, the magnetic polarity is inwardly (crossed circle, red) directed, otherwise, it is outwardly (dotted circle, green) directed.