Toroidal magnetic field structure of the solar convective envelope inferred from the initial observations of the sunspots

► Toroidal magnetic field structure of the solar convective envelope. ► Inference of toroidal magnetic field structure from sunspots. ► Parker's (1955) flux tube model. ► Hiremath's (2002) anchoring depth information from the sunspots. ► Toroidal magnetic field structure inferred by helioseismology.