Keplerian masked velocity integrated-intensity maps of the 23 Herbig disks with at least one detection of ¹²CO, ¹³CO, or C¹⁸O. For each disk, ¹²CO, ¹³CO, and C¹⁸O are given in the first, second, and third panel from left to right. If nothing is shown, the molecule is not covered. The bar in every first panel from the left indicates a size of 100 au with the corresponding angular size below. The size of the beam is indicated in the bottom left of each panel. A sinh stretch is used to make the fainter parts of the maps better visible. The minimum value is set to zero, and the maximum value in mJy beam⁻¹ km s⁻¹ is indicted on each panel in the top left corner. The disks with no detections in all three isotopologues are not shown here.