Dimensionless luminosity xl_x, PA, and PD as functions of the dimensionless photon energy, x=E/f_ck_BT_eff for emission from the 1°-wide rings with the fiducial parameter set θ_max = 30°, i = 60°, and β_eq = 0.35. Column (a) shows the results for various inclinations with other parameters from the fiducial set. The blue, orange, green, and red lines correspond to i = 5°, 30°, 60°, and 90°, respectively. Column (b) shows the results for various ring colatitudes with other parameters from the fiducial set. The blue, orange, green, and red lines correspond to θ_max = 5°, 30°, 60°, and 90°, respectively. Column (c) shows the results for various equatorial velocities with other parameters from the fiducial set. The blue, orange, green, and red lines correspond to β_eq = 0.0, 0.2, 0.35, and 0.5, respectively. The PA is zero for vertical polarization and is measured counterclockwise.