<xs:simpleType name="ReferencePressureKind">
  <xs:annotation>
    <xs:documentation>ReferencePressureKind</xs:documentation>
  </xs:annotation>
  <xs:restriction base="eml:TypeEnum">
    <xs:enumeration value="absolute">
      <xs:annotation>
        <xs:documentation>absolute</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="ambient">
      <xs:annotation>
        <xs:documentation>ambient</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="legal"/>
  </xs:restriction>
</xs:simpleType>