What is the test for experienced trial judge?

"The 'experienced trial judge is the best judge of the value of professional services rendered in his court, and while his judgment is of course subject to review, it will not be disturbed unless the appellate court is convinced that it is clearly wrong.'" (Serrano v. Priest (1977) 20 Cal.3d 25, 49.)

"'The trial court makes its determination after consideration of a number of factors, including the nature of the litigation, its difficulty, the amount involved, the skill required in its handling, the skill employed, the attention given, the success or failure, and other circumstances in the case.'" (PLCM Group v. Drexler (2000) 22 Cal.4th 1084, 1096.)