Column density ratios of detected species and upper limits with respect to methanol. Left: column density ratios for the detected species with respect to methanol for our Band 3 data (blue). The same ratios from PILS in Band 7 (pink) are also shown for comparison (see the text for references). The hollow symbols show the species that only have one detected line. Right: ratios of the upper limits measured in this work (Table B.1) with respect to methanol. In both panels, the species are ordered from left to right by increasing Band 3 ratios with respect to methanol.