Figure 2
From: Raised-Volume Forced Expiratory Flow-Volume Curve in Healthy Taiwanese Infants

Scatter plots and regression curves of Z-scores of infant lung function parameters. Z-scores of the maximal expiratory flow measured in functional residual capacity (VmaxFRC) (A), resistance of the respiratory system (Rrs) (B), and compliance of the respiratory system (Crs) plotted against the Z-scores of various RVRTC parameters including forced expiratory volume at 0.5 (FEV0.5), forced vital capacity (FVC), and forced midexpiratory flow (FEF25–75).