Two maps calculated using the average intensities at radial offset points from H¹³CN(4−3) ALMA observations (blue), and the total intensities of H¹³CN(2−1, 3−2, 4−3) (black). The min values and the number of observational constraints that are used in the calculations are written. Contours are plotted at the 1–4σ standard deviation levels from the minimum . The best-fitting model for H¹³CN is shown by a black X.