Cosmological parameters likelihood function derived from MILCA-Planck maps cross-correlation, at 44 (dark blue), 70 (green), 100 (yellow), and 143 GHz (red). Solid lines presents the constraints assuming a Gaussian prior on (1−b) = 0.8 ± 0.05, the dashed lines assume a flat prior 0.7 < (1−b) < 0.9. The solid black line presents the constraints provided by the CMB angular power spectrum.