Observed (thick black line) and modeled (thin color line) LSD Stokes I, V, Q and U profiles (from left to right) of AU Mic (top row) and EV Lac (bottom row). The thin blue, green and red lines correspond, respectively, to the Stokes V, Stokes IV and Stokes IVQU ZDI fits to the LSD profiles; the cyan dashed lines in the left panels illustrate the difference between the observations and the Stokes IVQU ZDI fit. Rotation cycles are indicated to the right of LSD profiles, and ±1σ error bars are shown to the left of the Stokes VQU signatures.