What is the test for a challenge to the amount of attorney fees awarded under the abuse of standard?

We review a challenge to the amount of a fee award under the abuse of discretion standard. (Loeffler v. Medina (2009) 174 Cal.App.4th 1495, 1509, 95 Cal.Rptr.3d 343.) [A]n experienced trial judge is in a much better position than an appellate court to assess the value of the legal services rendered in his or her court, and the amount of a fee awarded by such a judge will therefore not be set aside on appeal absent a showing that it is manifestly excessive in the circumstances. [Citation.] The only proper basis of reversal of the amount of an attorney fees award is if the amount awarded is so large or small that it shocks the conscience and suggests that passion and prejudice influenced the determination. (Ibid . )