What is the burden of proving a person had a reasonable expectation of privacy during a search?

" 'A defendant bears the burden to show he had such an expectation. [Citations.] Factors to consider in the determination include " 'whether the defendant has a [property or] possessory interest in the thing seized or the place searched; whether he has the right to exclude others from that place; whether he has exhibited a subjective expectation that it would remain free from governmental invasion, whether he took normal precautions to maintain his privacy and whether he was legitimately on the premises.' " [Citations.]' [Citation.]" People v. Ybarra (1991) 233 Cal.App.3d 1353, 1360, 285 Cal.Rptr. 200.)