Spin-down power distributions obtained for each model for the visible γ-ray objects for a different set of birth distributions: a Gaussian of width 200 ms centred at 0 for the periods; the sum of two Gaussians in log ₁₀B_NS [Tesla], both 0.6 in width, respectively centred at 8.4 and 9.1, and with an amplitude ratio 1:7/12 for the surface magnetic fields; and the Paczyński (1990) surface density in the Galaxy. Pink and green refer to radio-loud and radio-quiet fractions of the total population, respectively. The LAT distribution, scaled to the total number of visible objects, is plotted as a black contour.