Characteristics on flow frequency

Low flow events

fl1	Mean annual low-flow pulse count (below 25th percentile).
fl2	Variability in annual low-flow pulse count (below 25th percentile).
fl3	Mean annual low-flow pulse count (below 5% of overall mean flow).

High flow events

fh1	Mean annual high-flow pulse count (above 75th percentile).
fh2	Variability in annual low-flow pulse count (above 75th percentile).
fh3	Mean number of days per year with moderate floods.
fh4	Mean number of days per year with large floods.
fh5	Frequency of events above overall median daily flow.
fh6	Frequency of moderate floods.
fh7	Frequency of large floods.
fh8	Frequency of events above Q25.
fh9	Frequency of events above Q75.
fh10	Frequency of events beyond median of annual minima.