Mid-IR fluxes at 12 μm and 22 μm as a function of hard X-rays flux. Left panel: Correlation found between the W3 integrated flux and that in the hard X-ray band from the 3PBC, for both Seyfert 1 and 2 galaxies (marked in black and yellow, respectively). The dashed black line corresponds to the regression line computed for the whole sample while the straight black and yellow lines mark that for type 1 and type 2 Seyfert galaxies, respectively. The correlation coefficients are reported in Sect. 5.3, while the p-chance values are negligible, all being lower than 10⁻⁶. Right panel: same as left plot, but computed using the mid-IR flux at 22 μm. The vertical dashed blue and red lines indicate the flux at which the sample is complete to 90% and 95%, respectively.