Duration of maximum heart rate zone:RatDiff:RptPeriod^max:^Patient:Qn
duration of maximum heart rate zone:ratdiff:rptperiod^max:^patient:qn
Duration of maximum heart rate zone:Rate Difference:Reporting period^Maximum value over interval:^Patient:Quantitative
duration of maximum heart rate zone:rate difference:reporting period^maximum value over interval:^patient:quantitative