Top panel: simplistic fit model (two log-normal components) applied to data set I (red, short dashed line) compared to a medium complex model consisting of 3 log-normal components (purple, long dashed line) and a sophisticated (4 log-normal components) model blue, short/long dashed line). Second panel: illustration of the components of the simplistic model. Third panel: components of the medium complex model. Fourth panel: components of the sophisticated fitting model, which assumes two strong magnetic field components around 1000 G and 1300 G, respectively. The reduced χ² value for the simplistic model is 3.9 compared to 1.3 for the medium complex model and 0.8 for the most sophisticated one.