Measurements > Spirometry displays your data as a breakdown of the ration FEV1/FVC.
FEV1 is the forced expired volume in one second
FVC is the forced vital capacity
FEV1/FVC provides an index of airflow limitation; a value < 0.7 indicates limitation
The breakdown is shown as
FEV1/FVC < 0.07
FEV1/FVC >= 0.07
Spirometry Mappings with clinical systems
The Spriometry mappings are provided in the 'General Data Mappings' Appendices under Measurements for each clinical application.