(a) Zonal-mean zonal winds at two heights (10 mbars, higher speeds, and 2 bars, lower speeds), averaged near the equator as a function of temperature. Black squares represent hydrodynamic models, cyan triangles represent 10 G field, red diamonds represent 30 G field, and blue asterisks represent 3 G field strength. (b) Ohmic dissipation (W) at 10 bars as a function of temperature, shown with the same symbols.