Results at 1 AU from the background model (red lines) and hourly measurement data obtained by STEREO-A (black lines) from 31 July to 26 August 2016 (648 h in total). From top to bottom: radial component of solar wind velocity V_r, magnetic field component B_r, B_ϕ, magnetic field strength B, and proton number density N. The solar wind variables related to the CIR structure being studied are marked by the blue shaded region.