Solar wind properties for 12 days in 2004. The collisional age a_col is displayed in the first panel. The second panel shows the density ratios n_{O^{7 +}}/n_{O^{6 +}} and n_{C^{6 +}}/n_{C^{5 +}}. The horizontal lines in the first two panels indicate the respective selection thresholds for a_col = 0.1, n_{C^{6 +}}/n_{C^{5 +}} = 1, and n_{O^{7 +}}/n_{O^{6 +}} = 0.1. The third panel contains the freeze-in temperatures T_f corresponding to the ion density ratios n_{O^{7 +}}/n_{O^{6 +}} and n_{C^{6 +}}/n_{C^{5 +}}. The fourth panel gives the magnitude of the magnetic field B and the azimuthal (B_φ) and polar (B_θ) angles of the magnetic field are shown in the fifth panel. The sixth panel shows the solar-wind proton speed (left y-axis) and proton density (right y-axis) as measured by SWEPAM. All data products are displayed with 1h time resolution. The gray shaded area marks a pure coronal-hole-wind stream, while the hatched area highlights an ICME.