Solar wind parameters observed by WIND during 2011 July 8–12. From top to bottom: pitch angle distribution of suprathermal electron (∼300 eV), magnetic field strength, elevation, and azimuthal angles of field direction in RTN coordinates, proton velocity, proton density, proton temperature, and total perpendicular pressure. The two gray shaded regions mark two SIRs (SIR1_W and SIR2_W). The red shaded region indicates the heliospheric plasma sheet (HPS). The two green vertical dashed lines mark the stream interfaces (SI1_W and SI2_W). The magenta dashed vertical line indicates the HCS crossing.