Scatter plots of the line integrated intensity as a function of FWHM (first column), integrated intensity as a function of the Doppler velocity (second column), and FWHM as a function of the Doppler velocity (third column). The observed data are represented by black diamonds and the synthetic data from 100 random realizations of the Model3_6000 with 20 threads and LOS velocities from intervals ⟨–5, 5⟩ (first row), ⟨–10, 10⟩ (second row), and ⟨–15, 15⟩ km s^-1 (third row) by red crosses.