This constant, the magnetic flux quantum defines the magnetic flux flowing through some arbitrary loop, where the flux is equal to the magnetic inductance multiplied by the area of that loop. The flux through this arbitrary loop is quantized and can be computed as Φ, where"
The magnetic flux quantum is expressed in units of Webers (Wb)
This constant is specified with a standard uncertainty (standard deviation) of: 0.000000046 * 10^(-15) Wb