.. index:: 
   single: Parameters; 1D Deviation Ratio

1D Deviation Ratio
==================

MAX/CAX deviation is the ratio of the CAX profile value to the maximum profile value expressed as a percent taken over the :ref:`in field area<In Field Area>`:

.. math:: 100 \cdot \cfrac {max} {cax}
   
Where *max* and *cax* are the profile maximum and central axis values respectively.

**Protocol invocation name**: 1D Deviation Ratio

|Note| The *max* and *cax* are affected by :ref:`normalisation<Normalisation>` or windowing.

.. |Note| image:: _static/Note.png