The output of 'mle' function for 'gp' distribution

Hi everyone,

When I use the 'mle' function for 'gp' ditribution (as follows), I obtain two outputs.

phat = mle(Data, 'distribution', 'gp')

According to mle funciton documentation, this function returns parameter estimates for the specified distribution. This documentaiton also indicates that 'gp' distribution function has three parameters (k, sigma and theta). Are the two outputs I obtain associated with aforementioned parameters?

Thanks,

Amir