Time-radius diagram of B_ϕ in solar αΩ model with C_α = 15 and D = 2.1 × 10⁶, for models with respectively a location of α-term such that (r₁, r₂) = 0.7−0.8 ; 0.8−0.9 ; 0.9−1 (from bottom to top panel). The three are represented on the same radial and temporal ranges, with logarithmic color scales. We note the clear difference of propagation patterns and cycle period, and that the standard deviation of magnetic amplitude increases as the α-effect location is deeper.