The NumberUnderLowerTolerance element is the number of included observations that are below the lower specification limit for bi-directional tolerances corresponding to the "NOOTLO" StatsValuesEnumType enumeration.
<xs:element name="NumberUnderLowerTolerance" type="StatsNonNegativeIntegerWithReferencesType" substitutionGroup="NumericCharacteristicWithTolStatsValue"><xs:annotation><xs:documentation>The NumberUnderLowerTolerance element is the number of included observations that are below the lower specification limit for bi-directional tolerances corresponding to the "NOOTLO" StatsValuesEnumType enumeration.</xs:documentation></xs:annotation></xs:element>