Column density profile fitting for HMSC G010.9823−0.3677. Panel a: PPMAP . The black and white ellipses represent the clump and its shells used for extracting pixels. The gray numbers denote the corresponding shells of the pixels. The beam of PPMAP is shown in bottom left. Panel b: profile fitting. The black and red dots indicate the PPMAP and their median values in the corresponding shells. The error of value of each shell is estimated by the 25th and 75th percentiles of of each shell, which is shown by the red error bar. The blue line is the fitting result for median values. The gray lines show the triple beams of PPMAP.