{"metadata":{"queryDate":"24 August 2026","version":"2.0 Beta"},"data":{"kcdbCode":"SIM-TF-MX-00000B3C-1","status":"Published","publicationDate":"2009-02-25","approvalDate":"2009-02-25","kcdbServiceCategory":"TF/TSD-1.1.2","branchValue":"Time scale difference","serviceValue":"Time scale difference","subServiceValue":"Local clock","individualServiceValue":"Local clock vs. UTC","instrument":"Local clock","instrumentMethod":"Local clock vs UTC","parameters":[{"parameterName":"Averaging time","parameterValue":"5 days"}],"id":14376,"statusDate":"2009-02-25","domainCode":"PHYSICS","metrologyAreaLabel":"TF","rmo":"SIM","countryValue":"Mexico","nmiCode":"CENAM","nmiName":"Centro Nacional de Metrologia","nmiRorIdentifier":"05v1qt749","nmiWikiDataIdentifier":"Q5761429","nmiIdentifiers":[{"identifier":"05v1qt749","scheme":"ROR"},{"identifier":"Q5761429","scheme":"WIKIDATA"}],"quantityValue":"Time scale difference","cmc":{"lowerLimit":-1.0,"upperLimit":1.0,"unit":"s"},"cmcUncertainty":{"lowerLimit":20.0,"upperLimit":20.0,"unit":"ns"},"confidenceLevel":95.0,"coverageFactor":2.0,"uncertaintyEquation":{"equation":"","equationComment":""},"uncertaintyTable":{"tableName":"","tableRows":0,"tableCols":0,"tableComment":"","tableContents":"<masked>"},"uncertaintyMode":"Absolute","comments":"This service requires the publication of the <em>Circular T</em> of the BIPM corresponding to dates when the calibration services were performed in order to know the time difference between the clock under calibration and UTC"}}