Fig. 3From: The 10% wind speed rule of thumb for estimating a wildfire’s forward rate of spread in forests and shrublandsPlots of the mean bias error (MBE) and mean absolute percent error (MAPE) per a, b observed rate of fire spread class (1.0 km h−1 interval), c, d fine dead fuel moisture content (2.5% interval) and e, f 10-m open wind speed class (10 km h−1 interval). The number of observations per interval is given by nBack to article page