Maps of a few selected regions illustrating the relation between polarization fraction and polarization angle dispersion function. Rows from top to bottom show total intensity at 353 GHz, polarized intensity, polarization fraction, and polarization angle dispersion function, . Columns from left to right are for Taurus, Orion, Ophiuchus, and Polaris. The polarization segments show the orientation of the apparent magnetic field, but their length is constant, not reflecting the changing polarization fraction. Note that the boundaries of the regions shown here do not match exactly those in Table 1 and Fig. 6.