Dependence of net SAM transferred to the protoplanet on the Mach number of the headwind. The dimensionless mass, orbital radius, and smoothing length are m = 0.1, а = 0.1 au and r_sm = 0, respectively. Different colors represent different Mach numbers. Colored dashed lines represent the data using Eq. (32). Panel a: results for the Stokes regime. Panel b: results for the Epstein regime.