Numeric vector of probabilities for which to calculate model values.
The default is the global variable
NADAprobs = c(0.05, 0.10, 0.25, 0.50, 0.75, 0.90, 0.95).
conf.int
A logical indicating if confidence intervals should be computed.
For cenfit and cenmle objects, the confidence
interval is set during the call to cenfit.
Currently not supported for ros objects.
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Additional arguments passed to the generic method.