<simpleType name="PressureMeasurementConfigurationEnumType">
  <restriction base="string">
    <enumeration value="pressure gauge">
      <annotation>
        <documentation>Pressure is measured with a pressure gauge at the ground surface.</documentation>
      </annotation>
    </enumeration>
    <enumeration value="borehole transducer">
      <annotation>
        <documentation>Pressure is measured with a transducer in the borehole.</documentation>
      </annotation>
    </enumeration>
  </restriction>
</simpleType>