The spirometer can estimate all the following except
The total lung capacity (TLC), about 6,000 mL, is the maximum amount of air that can fill the lungs (TLC = TV + IRV + ERV + RV Ref: guyton and hall textbook of medical physiology 12 edition page number:326,327,328
Total lung capacity
Forced expiratory volume in 1 second
Peak expiratory flow
Vital capacity
Respiratory system