Notes.⁽¹⁾ N_I: clump number in the ensemble. The numbers in parenthesis give the clump number to completely fill the intensity contour area for 40 K km s⁻¹ ≤ I ≤ 60 K km s⁻¹.⁽²⁾ n_i: average clump density.⁽³⁾ R_i and Ω_i denote radius and solid angle of a single clump.⁽⁴⁾ I_i: clump averaged intensity.⁽⁵⁾ Ω_I denotes the solid angle enclosed by the respective intensity contour including the solid area of all inner contours. The area of the 39 K km s⁻¹ contour is exclusive of the 57 K km s⁻¹ contour listed in the second line. In the last column gives the ratio between the solid angle covered by the model clumps with the matching intensity and the corresponding observed solid angle in the map (excluding inner contours).