<?xml version='1.0' encoding='us-ascii'?>
<param xml:id="mes_b_rtn1m_phi">
    <get>
      <amdaParam name="mes_b_rtn1m" />
    </get>
    <process>180+RAD2DEG*atan2(-$mes_b_rtn1m[1],-$mes_b_rtn1m[0])</process>
    <output />
  </param>