PoSKI model of the Mg II broad line (solid black line) for all three epochs with SDSS (top), Gemini (middle), and Magellan (bottom) data. The components are from the smaller BLR (BLR1; dotted line) and the cBLR (dashed line). The upper insets in each panel show the binary configuration for the corresponding epoch. The wavelength has been converted to the velocity scale given on the x-axis, and the y-axis shows the normalized intensity.