Face-on distributions of the gas surface density (top left), radial velocity component (top center), azimuthal velocity component (top right), azimuthal magnetic field component (bottom left), radial magnetic field component (bottom center), and total field strength (bottom right) in the part of the disk at t = 500 Myr for model O05 (with slow pattern speed rotation). We have labeled the spurs with letters A and B for easier reference. Magenta solid line shows the same surface density level in all frames. Rotation is clockwise.