What is the range of aggravated damages for defamation?

As reviewed in Hill v. Church of Scientology of Toronto, 1995 CanLII 59 (SCC), [1995] 2 S.C.R. 1130 at para. 188, aggravated damages are described as follows: Aggravated damages may be awarded in circumstances where the defendants' conduct has been particularly high-handed or oppressive, thereby increasing the plaintiff's humiliation and anxiety arising from the libellous statement. The nature of these damages was aptly described by Robins J.A. in Walker v. CFTO Ltd., supra, in these words at p. 111: Where the defendant is guilty of insulting, high-handed, spiteful, malicious or oppressive conduct which increases the mental distress -- the humiliation, indignation, anxiety, grief, fear and the like -- suffered by the plaintiff as a result of being defamed, the plaintiff may be entitled to what has come to be known as "aggravated damages".