1D Field Size 50

The field size (FS) is defined as the distance from the left field edge to the right field edge:

\[FS = d(RE) - d(LE)\]

Where d(RE) and d(LE) are the linear distances from the profile centre to the right and left field edges respectively.

Protocol invocation name: 1D Field Size 50

Noisy data can lead to a inaccurate field size being reported.

The right and left field edges are affected by the set window levels.