<simpleType name="PressureTypeEnumType">
  <annotation>
    <documentation>Simple type: PressureTypeEnumType</documentation>
  </annotation>
  <restriction base="string">
    <enumeration value="effective">
      <annotation>
        <documentation>Effective pressure accounting for pore water pressure.</documentation>
      </annotation>
    </enumeration>
    <enumeration value="gauge">
      <annotation>
        <documentation>Gauge pressure measured relative to atmospheric pressure.</documentation>
      </annotation>
    </enumeration>
    <enumeration value="transducer">
      <annotation>
        <documentation>Pressure measured using a transducer sensor.</documentation>
      </annotation>
    </enumeration>
  </restriction>
</simpleType>