What is the substantial evidence standard of review when a defendant challenges his conviction for insufficient evidence on appeal?

When a defendant challenges his or her conviction for insufficient evidence on appeal, we apply the substantial evidence standard of review. "Under this standard, the court 'must review the whole record in the light most favorable to the judgment below to determine whether it discloses substantial evidence--that is, evidence which is reasonable, credible, and of solid value--such that a reasonable trier of fact could find the defendant guilty beyond a reasonable doubt.' [Citations.] The focus of the substantial evidence test is on the whole record of evidence presented to the trier of fact, rather than on ' "isolated bits of evidence." ' " (People v. Cuevas (1995) 12 Cal.4th 252, 260-261, italics added in Cuevas.) We "must presume in support of the judgment the existence of

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