Comparison between the synthetic and observational data. Panel a: Calculation of the pB from the 3D cylindrical dataset. Panels b and c: Background-subtracted images of the calculated synthetic data for FoVs corresponding to the streamer observations edge-on and face-on, respectively. Panels d and e: Observations on 30 April 2011 from STEREO COR2-A and LASCO C2, respectively. Here, the dark circle represents a patch to mask the distance below 2.0 R_⊙.