# Bayesian IRF

Dear Dynare users,

retrieving the posterior IRFs, through the command “oo_.PosteriorIRF.dsge”, you can get the mean, median, the variance, the confidence interval for the mean, and the a number of distribution on which they are computed. In particular, by writing “oo_.PosteriorIRF.dsge.Distribution” you can get directly these different IRFs, obtained from different draws of the parameters.
My question is the following: Why are these IRFs always 9? Why not a higher number, which seems to me more appropriate? Thanks