Same as Fig. 13 but with the spectral resolution degraded to R ~ 100. The top row depicts the smoothed input to the simulation, which nearly completely destroys the C ii signature at all epochs. At the earliest phase a “break” in the shape of the Si iiλ6355 feature can be seen near 6250 Å. The break signature may be a way to detect C ii at lower spectral resolutions and binning than our observations here, but only at the earliest phases.