Alternative version of the rotation–magnetic field relation. Top panel: ratio of average field, ⟨B⟩, to kinetic field limit, B_kin, as function of rotation period. Stars rotating faster than the saturation period are colored blue, while other stars are shown in gray. Bottom panel: magnetic flux, Φ_B. Stars rotating slower than the saturation limit are colored red, while faster rotators are shown in gray. Symbols and colors are the same as in Fig. 5. See text for details about B_kin.