Correlations of sunspot and MF properties for all 51 sunspot maps (a)–e)), v_3h, and their evolution within one week for 20 sunspots (f)–h)) indicated by linear regressions (red lines) and the coefficients, . a) MF velocities, v_MF, in m/s and b) MF extensions, a_MF, in Mm against the sunspot radii, R_S, in Mm with the average values, ⟨ v_MF ⟩ ₅₁ = 982   m/s and ⟨ a_MF ⟩ ₅₁ = 9.2   Mm. c) MF velocities, v_MF, in m/s and d) MF extensions, a_MF, in Mm against the maximum EF velocities, v_EF, in m/s. e) Maximum EF velocities, v_EF, in m/s against R_S in Mm with the average value, ⟨ v_EF ⟩ ₅₁ = 2324   m/s. f) Weekly changes, Δv_MF, in m/s and g) Δa_MF in Mm of the moat flow against ΔR_S in Mm. h) Weekly changes of MF properties, Δv_MF, in m/s against Δa_MF in Mm.