Graph description: Figure 1. PEFR measured with large Wright peak flow meter and mini Wright peak flow meter, with line of equality

This is a scatter diagram, showing P E F R by the Wright meter on the horizontal axis and P E F R by the mini meter on the vertical axis. There is a rising diagnonal line called the line of equality. The points are clustered fairly closely about this line. The largest verical distance from a point to the line is about 80 litres per minute.

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Last updated: 29 April, 2008.