What is the test for stale information in the context of a search warrant?

"Information that is remote in time may be deemed stale and thus unworthy of consideration in determining whether an affidavit for a search warrant is supported by probable cause. Such information is deemed stale unless it consists of facts so closely related to the time of the issuance of the warrant that it justifies a finding of probable cause at that time. The question of staleness turns on the facts of each particular case. [Citations.] If circumstances would justify a person of ordinary prudence to conclude that an activity had continued to the present time, then the passage of time will not render the information stale." (People v. Hulland (2003) 110 Cal.App.4th 1646, 1652.) "Although there is no bright line rule indicating when information becomes stale [citation], delays of more than four weeks are generally considered insufficient to demonstrate present probable cause." (Id. at p. 1652.)