No.

Symbol

SVs

Description

Equation


1

p95

height

95th height percentile of all returns

\( {x}_0+\frac{h_0}{n_0}\left(\frac{p_{95}N}{100}{F}_{1}\right) \)

2

pFRAMe

density

ratio: number of first returns above median height to the total number of first returns

\( \frac{n_{1\overset{\sim }{x}}}{N_1} \)

 x height of the return; x_{0} lower bound of given percentile; h_{0} range of the class interval of given percentile; n_{0} frequency of the interval of given percentile; N total number of all ALS returns; F_{−1} cumulative frequency of the interval preceding given percentile; \( {n}_{1\overset{\sim }{x}} \) number of first ALS returns above the values determined by median of all returns; N_{1} number of first ALS returns