This is a constant for the proton's gyromagnetic ratio divided by 2`pi`, `gamma_p/(2*pi)`, also known as the magnetogyric ratio over 2`pi`.
This constant represents the ratio of the electron's magnetic dipole moment to its angular momentum. The proton gyromagnetic ratio is reported in SI units of `Mhz/T`.
This constant is specified with a standard uncertainty (standard deviation) of: 0.000 0010 MHz/T