Hi Sir In "iid.test" package the function iid.test() has been developed for N sites having same number of observations. Can we use this function for a single site? Because I have sites with different numer of observations. Regards -- AMINA SHAHZADI Department of Statistics GC University Lahore, Pakistan. Email: amnakhan493@gmail.com amna_989@hotmail.com amna_989@yahoo.com [[alternative HTML version deleted]]