Comment on: Magnetic field measurements in Rb vapor by splitting Hanle resonances under the presence of a perpendicular scanning magnetic fieldAntoine Weis, Yongqi Shi and Zoran D. GrujićEur. Phys. J. D, 71 4 (2017) 80DOI: https://doi.org/10.1140/epjd/e2017-70774-9