In total 33 of the isolated clumps show head-tail like morphologies. The figure shows column density maps of 16 of them (Clump 209 and 218 are EBHIS detections, the remaining clouds shown are from GASS data). The remaining 17 cannot as clearly be identified as HT structures in the column density maps, because nearby clumps partly overlap in the projection. They were confirmed to likely be HT clouds by a close inspection of the data cube. Contours are [3,6,9,12,16,20,30,40,...]·σ_rms with σ_rms = 5 × 10¹⁷   cm^-2 (GASS) and σ_rms = 7 × 10¹⁷   cm^-2 (EBHIS).