Astm E562-19e1 May 2026

[ A_A \approx P_P = \fracP_pP_t ]

Then average over all fields:

Where ( n ) = number of fields examined. ASTM E562 requires reporting the 95% confidence interval. Compute: astm e562-19e1

[ s = \sqrt\frac\sum (\barV_V - V_V(field))^2n-1 ] [ A_A \approx P_P = \fracP_pP_t ] Then

[ V_V(field) = \fracP_pP_t \times 100 ]