Comparison of the NICER-derived A_V profile and the A_V profile derived from the column density from the best-fit asymmetric onion-like model along the main cut. The black crosses are the NICER-derived A_V values at each pixel in the 50″-wide strip on the A_V map shown as the insert. The orange and red squares with error bars show the radially averaged A_V profile with the 14.1″-bin from the strip, where the central region is represented as lower limits due to the lack of the K_s-band detections. The gray step curve shows the A_V profiles converted from our onion-like model, while the blue step curve is convolved with the A_V-beam of 50″. The coverage of our onion-like model is shown by black dashed lines. The insert shows the NICER-derived A_V map with the 50″-beam (Fig. 2g) overlaid with black dots, indicating the stars only detected in the IRAC1/2 bands but with the artificial K_s-band detection (see Sect. 4.4).