2003-2004 QA Results for Sublot-Level Variables from 280 Subplots in Pennsylvania              
Percentage of data within tolerance Number of times data exceeded tolerance
Variable Tolerance @1x @2x @3x @4x @1x @2x @3x @4x Records
Subplot Center Cond No Tolerance 93.9% 17 280
Microplot Center Cond No Tolerance 92.9% 20 280
Slope ±10 % 97.1% 98.3% 98.3% 99.4% 5 3 3 1 172
Aspect ±10 º 70.6% 88.8% 91.9% 94.4% 47 18 13 9 160
Snow/Water Depth ±0.5 ft 94.4% 99.4% 100.0% 100.0% 10 1 0 0 178