The value of the attribute () cannot be in the future. An element using the attribute shall contain an element. An element using the attribute shall be the decendant of a element. In a element, there shall be only one element which references the same (). The value of the element () cannot be in the future. The values of a element shall appear in ascending order ()."/> The values of a element shall appear in ascending order ()."/> A element containing a element with a value of 'Other' shall also contain the element. Each value of a element shall less than the corresponding value in the sibling element. Each value of the attribute (data type IDREFS) shall be the id of a element. The value of an attribute shall be the id of an element. Sibling and elements shall have the same number of values. One and only one of the AnalysisResults derivedDataReferences, radMeasurementGroupReferences, and radMeasurementReferences attributes shall be specified. The CharacteristicGroup groupOutOfLimits attribute shall be true if any of descendant Characteristic valueOutOfLimits attributes are true. The compressed content of ChannelData shall be coherent: the last value in the list shall not be zero. The compressed content of ChannelData shall be coherent: all zero values in the list shall be followed by a value that is greater than zero and an integer. If the GrossCounts element's energyWindowsReference attribute is omitted, the child CountData element shall have exactly one value. If the GrossCounts element's energyWindowsReference attribute is present, the child CountData element and the referenced EnergyWindows shall have the same number of values. If the energy calibration of Spectrum is defined using EnergyBoundaryValues, then the number of values in EnergyBoundaryValues () shall be one greater than the number of channels contained in the Spectrum (). The use of the originReference attribute shall not result in a circular reference. The use of the originReference attribute shall not result in a circular reference. The use of the originReference attribute shall not result in a circular reference. The value of a originReference attribute shall be the id of a RadInstrumentInformation, RadDetectorInformation, or RadItemInformation element.