Visual representation of the measured properties of the Hα double-peaked profile for the observation of MJD56194. The vertical black lines mark λ_i and λ_f (respectively the lower and upper wavelength limits of the double-peaked profile). The horizontal blue line marks the maximum flux value for the blue peak, F_B, while the vertical blue line marks λ_B, the wavelength where F_B occurs. The maximum flux of the red peak F_R is marked by the horizontal red line, while λ_R is marked by the vertical red line. The green strip represents the Gaussian smoothing of the spectrum. The yellow region represents F_broad, after subtracting the contribution of the narrow emission lines.