Degree of polarization P for models with θ_LOS from 0° to 90°, with steps of 10°. Given its low significance, we do not display the degree of polarization when the flux in the simulated intensity spectrum is smaller than 5% of the peak flux of the Lyα line. The left, middle, and right panels show the results for θ_o, Wind = 30°, 60°, and 90°, respectively. The overall degree of polarization increases with increasing θ_LOS and decreasing θ_o, Wind.