Radial profiles of column densities and column density ratios for SO, CS, CH₃OH, and H₂CO in the HD 169142 disk. These are computed from the radial emission profiles in Fig. 2 assuming a temperature of 60 K. Left: At the native resolution of the data; middle: Convolved to the same beam; and right: Ratios of the convolved profiles. We show N(CS)/N(SO)=1 with a horizontal line; for H₂CO and CH₃OH we show the upper limit on the column density ratio where CH₃OH is not detected. The vertical dashed line gives the radial location of the giant planet HD 169142 b.