Same as Fig. 6, but for the active M 3.5 dwarf AD Leo. Model parameters: T_eff = 3400 K, log g = 5.0, ε_Fe =  −4.50, υsini = 3 km s^-1. Thick black line – observations, violet long-dashed line (upper left plot only) – observations of inactive Gl 682, green dashed – B = (1.7,1.7,0) kG, blue dash-dotted – B = (2,0,0) kG, brawn dotted – B = (2.5,0,0) kG, red solid – B = (2.9,0,0) kG. Wavelengths are in air for the upper plot and in vacuum for the lower.