Differential (top panel) distribution of the separations of the final counterparts from the (single-component) radio sources, drawn from the COSMOS2015, i band, or IRAC catalogs (as described in the text). The bottom panel shows the cumulative distributions of the separations of all counterpart candidates (with p_false ≤ 0.2) drawn from the COSMOS2015 (blue dashed curve), i band (green dotted curve), and IRAC (red dash-dotted curve) catalogs. Also indicated is the separation encompassing 99% of the counterparts for each of the counterpart sample.