Northern hemisphere time-latitude “butterfly” diagrams for three sample solutions taken from Figure 5, all using the same Babcock-Leighton nonlinearity but differing in their envelope magnetic diffusivity and dynamo number (viz. Table 2). For each simulation shown, the top panel shows the toroidal magnetic field at R/R_⊙ = 0.7, and the bottom panel shows the source term (|f(B_ϕ)B_ϕ|) at the same depth. Note that the color scale for the toroidal magnetic field differs in each panel.