Table 2: Comparison of fixed-area and angle-count estimates of stand volume, for the 12 000 plots simulated in each measurement year.

Measurement yearFixed-area volume estimateAngle-count volume estimate
Mean (m³/ha)Std. dev.Mean (m³/ha)Std. dev.

1977759.0231.3762.5172.4
1982769.3226.3774.6161.9
1987772.7225.3775.2155.1
1992818.2241.2822.4163.9
1997798.6242.5806.0158.7
2002775.5259.0780.8168.0
2007735.3275.5737.1181.9