Scatter plot of the ratio of the maximum linear polarisation signal produced by scattering polarisation and the Hanle effect (LP_H) and the Zeeman effect (LP_Z) as a function of the magnetic field strength and inclination. In the main plot, the preference is given to points with lower (less common) values of LP_H/LP_Z. In the inset, the preference is given to the pixels with higher values of LP_H/LP_Z. The scale of the inset axes is identical to the main plot.