Portion of the spectrum of HD 192686 showing the Fe II λ 4385.4 Å line. The Zeeman pattern of this line, a doublet, is illustrated below the spectrum. The amplitude of the splitting corresponds to the measured value of the mean magnetic field modulus, ⟨B⟩ = 3573 G. The length of each vertical bar is proportional to the relative strength of the corresponding line component. The π components appear above the horizontal line (in green), the σ₊ and σ₋ components below it (in blue and yellow, respectively).