<?xml version='1.0' encoding='us-ascii'?>
<param xml:id="stb_b_rtn_theta">
    <get>
      <amdaParam name="stb_b_rtn" />
    </get>
    <process>asin($stb_b_rtn[2] / magnitude($stb_b_rtn))*RAD2DEG</process>
    <output />
  </param>