Moment maps from the CO (J = 1 → 0) transition from our chemo-dynamical simulation under different projection angles. In the left, middle and left columns we show the zeroth, first and second moment maps, respectively. In the upper row the mean component of the magnetic field is along the LOS, whereas in the bottom row the mean magnetic field lies in the plane of the sky. Intermediate angles are shown in the second, third and fourth rows (the azimuthal and polar angles are indicated in the upper left corners of the zeroth moment maps). The red dotted, yellow dash, blue dash-dotted, and solid violet contours represent 30, 50, 70, and 90% of the maximum column density, respectively. The red ellipses in the right column show the region used to extract average values as a function of the projection angle (see text and Fig. 4).