type
character indicating which type of metric to compile change points for.
Options are "h" for high flow metrics, "l" for low flow metrics, "b" for baseflow
metrics, or "a" for all 30 metrics (10 high, 10 low, 10 baseflow).
text
optional character string for margin text, e.g. for station name,
location, or other notes. Set to NULL if no margin text is wanted, or set to "d"
to use default text containing the station ID, station name, and province/state
returned from