Snapshots of the longitudinally averaged toroidal magnetic field (B_ϕ) at different stages during half a magnetic cycle, with peak meridional circulation V_θp = 12.5 m s⁻¹. Left column: represents the evolution of the toroidal field for the advection-dominated convection zone (η_c = 2 × 10¹⁰ cm² s⁻¹) where the field is significantly advected in the convection zone. Right column: corresponds to the diffusion-dominated convection zone (η_c = 10¹¹ cm² s⁻¹) where the diffusion of the field is significant. In the advection-dominated case, the toroidal fields of previous few cycles are also present near the tachocline.