Magnetic field–rotation relation for solar-like and low-mass stars. Symbols for stars rotating slower than Ro = 0.13 are colored red, while those of faster rotators are colored blue. Larger and darker symbols indicate higher stellar mass than smaller and lighter symbols. The gray dashed lines show linear fits separately for the slowly rotating stars (Ro >  0.13; ⟨B⟩=200 G ×Ro^−1.25) and the fast rotators (Ro <  0.13; ⟨B⟩=2050 G ×Ro^−0.11). Downward open triangles show upper limits for ⟨B⟩.