<xsd:simpleType id="st.measurementType" name="measurementType">
    <xsd:annotation>
        <xsd:documentation>
            <h:div class="summary" xmlns:h="http://www.w3.org/1999/xhtml">Type of spectral measurement.</h:div>
            <h:div class="description" xmlns:h="http://www.w3.org/1999/xhtml">The nature of the measured data. This is not an exhaustive list and should only be used if it affects the storage or immediate processing.</h:div>
        </xsd:documentation>
    </xsd:annotation>
    <xsd:union>
        <xsd:simpleType>
            <xsd:restriction base="xsd:string">
                <xsd:enumeration value="transmittance">
                    <xsd:annotation>
                        <xsd:documentation>
                            <h:div class="summary" xmlns:h="http://www.w3.org/1999/xhtml">Data are transmittance, so "peaks" are usually troughs.</h:div>
                        </xsd:documentation>
                    </xsd:annotation>
                </xsd:enumeration>
                <xsd:enumeration value="absorbance">
                    <xsd:annotation>
                        <xsd:documentation>
                            <h:div class="summary" xmlns:h="http://www.w3.org/1999/xhtml">Data are absorbanc.</h:div>
                            <h:div class="description" xmlns:h="http://www.w3.org/1999/xhtml">so "peaks" are normally peaks.</h:div>
                        </xsd:documentation>
                    </xsd:annotation>
                </xsd:enumeration>
            </xsd:restriction>
        </xsd:simpleType>
        <xsd:simpleType>
            <xsd:restriction base="namespaceRefType" />
        </xsd:simpleType>
    </xsd:union>
</xsd:simpleType>

• measurementType
• nsA:measurement