On a limitation of Zeeman polarimetry and imperfect instrumentation in representing solar magnetic fields with weaker polarization signalA.A. Pevtsov, Y. Liu, I. Virtanen, L. Bertello, K. Mursula, K.D. Leka and A.L.H. HughesJ. Space Weather Space Clim., 11 (2021) 14DOI: https://doi.org/10.1051/swsc/2021003