Fig. 3From: The effect of spatial structure of forests on the precision and costs of plot-level forest resource estimationBoxplots of precision measured by the standard deviation (sd) of the estimator (1) and costs for eight sample plots with maximum radii 7 and 9 m, basal area factors 1 and 2, and inner radii 5 and 6 m, where trees with a dbh<10 cm were only measured in the inner circle. This is a zoomed view and some values have been cut offBack to article page