Position-velocity diagram in colour scale and contours, at z = 0.14 pc (top), z =  −0.07 pc (middle) and z =  −0.30 pc (bottom), for the turbulent, line of sight, short cylinders run C_T. The contour levels and red crosses are as in Fig. 6. Compared with model B_T (Fig. 8 right column), we see more evidence of the original velocities of the clouds from the non-interacting parts, because of the change of perspective. This calculation produces the best fit to the observations (Fig. 2).