Comparisons of the results obtained with NICOLE and SIR for the LOS magnetic field (left column) and LOS velocities (right column) for the MBPs displayed in Fig. 3. Row a: MBP in panel a in Fig. 3, while row b: MBP in panel b. In all plots the black line indicates the results from NICOLE while the red line shows the results from SIR. The error bars in NICOLE values follow the approach of Reid et al. (2016), while the error bars with SIR parameters were calculated with the approach described in Socas-Navarro (2011) Sect. 5. On the whole, both methods return very similar evolutionary characteristics, often displaying the same peaks and troughs in the parameters. For the most part, the values obtained for both fall within their respective error bars. Discrepancies between the two approaches could be due to the success of fitting in a given frame for a particular technique. The results with these two independent techniques, however, show consistency in our results for the evolutionary characteristics of the MBPs.