Combined (IR and radio) shot-noise point sources D_ℓ power at ℓ = 3000 obtained from the fit. Top panel: simulations average of point sources at f_sky = 0.5, shown in dark red for SET1 simulations, yellow for SET2, and black for SET3. The red and blue bands show the simulations input for the radio and IR point sources, respectively, while the grey horizontal line at each ν represents the joint point-source input. Bottom panel: point sources for the three different masks of f_sky = 0.6, 0.5, 0.3 in blue, green and red, respectively. The yellow and orange bands represent the expected shot-noise point-source contribution estimated in Planck Collaboration XXX (2014) and Planck Collaboration XI (2016), where the width of the coloured band represents the error on the expected value. Planck Collaboration XI (2016) gives expected values for the three low ν channels only.