Pulmonary function test measurements in the 15,308 tests
| Parameter | Mean±SD | Median | 25th–75th IQR |
| PEF (L) | 5.00±2.45 | 4.80 | 3.07–6.63 |
| FET (s) | 11.12±4.02 | 11.79 | 8.02–14.90 |
| FETPEF (s) | 0.09±0.06 | 0.08 | 0.05–0.11 |
| FEVPEF (L) | 0.43±0.28 | 0.40 | 0.20–0.60 |
| FEV0.5 (L) | 1.49±0.79 | 1.44 | 0.84–2.04 |
| FEV1 (L) | 1.91±0.97 | 1.80 | 1.13–2.54 |
| FEV2 (L) | 2.25±1.06 | 2.12 | 1.42–2.92 |
| FEV3 (L) | 2.42±1.07 | 2.28 | 1.60–3.08 |
| FEV6 (L) | 2.46±1.10 | 2.36 | 1.74–3.04 |
| FVC (L) | 2.87±1.09 | 2.75 | 2.06–3.53 |
| VC (L) | 2.98±1.10 | 2.86 | 2.16–3.65 |
| FEV1/FVC | 0.66±0.20 | 0.72 | 0.51–0.82 |
| FEV1/FEV6 | 0.66±0.17 | 0.71 | 0.52–0.80 |
| FEF25 (L/s) | 3.85±2.64 | 3.78 | 1.33–5.77 |
| FEF50 (L/s) | 2.01±1.65 | 1.68 | 0.50–3.12 |
| FEF75 (L/s) | 0.58±0.56 | 0.38 | 0.15–0.83 |
| FEF25-75 (L/s) | 1.51±1.29 | 1.18 | 0.38–2.33 |
| FEF75-85 (L/s) | 0.38±0.46 | 0.23 | 0.12–0.51 |
| FEF50/0.5*FVC (%) | 1.37±1.12 | 1.17 | 0.41–2.01 |
| TLC (L) | 5.49±1.77 | 5.25 | 4.21–6.58 |
| RV (L) | 2.51±1.47 | 2.04 | 1.46–3.19 |
| ERV (L) | 0.83±0.51 | 0.75 | 0.45–1.11 |
| FRC (L) | 3.35±1.55 | 2.95 | 2.21–4.10 |
| RV/TLC | 0.44±0.15 | 0.42 | 0.32–0.55 |
| IC (L) | 2.15±0.85 | 2.05 | 1.53–2.65 |
| IC/TLC | 0.40±0.13 | 0.42 | 0.31–0.50 |
ERV, expiratory reserve volume; FEF25–75, forced expiratory flow between 25% and 75% of FVC; FETPEF, FET at PEF; FEVk, forced expiratory volume at k seconds of expiration; FRC, functional residual capacity; FVC, forced vital capacity; IC, inspiratory capacity; PEF, peak expiratory flow; RV, residual volume; TLC, total lung capacity.