Zeeman patterns of Fe I triplet and Ce III pseudo-doublet with corresponding Landé factors 𝑔_eff. Each Zeeman component is represented by a vertical bar whose length is proportional to its relative strength. The π components are presented above the horizontal wavelength axis, and the σ_± components are shown below it. The unit length of the wavelength axis is ∆λ_B, defined as the wavelength shift from the line centre of the σ components in a normal Zeeman triplet with a Landé factor of 𝑔_eff= 1.·