Absorption spectral line for V sin i = {50, 100, 200} km s⁻¹. Top row (a): comparison of various GSA for an absorption line, employing different values of V sin i.. The blue solid line represents the synthetic profile, and the red dotted line represents the best GSA of 200 MC simulations. Middle row (b): deconvolved spectra for different values of V sin i. The blue solid line represents the non-rotated line, and the red dotted line represents the deconvolved line. Bottom row (c): difference between the synthetic profiles and GSA for different values of V sin i. The blue solid line represents the difference between the non-rotated line and the deconvolved line.