<operator type="random_between">
      <range min="76"   max="99"    min_output= "-15"    max_output="-10"/>
      <range min="74"   max="76"    min_output= "-14"    max_output="-9"/>
      <range min="72"   max="74"    min_output= "-13"    max_output="-9"/>
      <range min="70"   max="72"    min_output= "-12"    max_output="-8"/>
      <range min="68"   max="70"    min_output= "-10"    max_output="-5"/>
      <range min="66"   max="68"    min_output= "-7"    max_output= "-2"/>
      <range min="64"   max="66"    min_output="-2"    max_output= "2"/>
      <range min="62"   max="64"    min_output="0"    max_output= "5"/>
      <range min="60"   max="62"    min_output="2"    max_output= "5"/>
      <range min="0"    max="60"    min_output="10"   max_output="15"/>
    </operator>