Galactic latitude distribution of the HGPS sources (gray histogram). The bin size of this histogram is 0.3°. The HGPS point source sensitivity is shown (in units of % Crab) at two different longitudes of 0° and 333°. For comparison, the PSR, SNR, 3FGL and 2FHL source distributions in the HGPS longitude range are shown as overlaid curves, smoothed with Gaussians of width 0.15°. The dashed line shows Planck measurements of CO(1-0) line emission as an estimate for matter density in the Galaxy and similarly smoothed. All curves are normalized to the area of the histogram.