Question about the Control Chart Report

Is there a way to configure the Control Chart Report to not count weekends as part of the days in the Completion Time column in the report. In other words, I would like the report to reflect business days. If I have an estimate of 2 days for a story and the developer started it on Friday morning and finished it Monday evening, I would like the report to reflect that the completion time was 2 days and not 4 days. By including weekend days, the report is kinda useless as a tool for validation of the accuracy of estimates unless you go through each issue and validate whether it carried across a weekend (unless the organization actually does require all employees to work seven days each week). At least this should be a configuration option for the report (don’t include weekends - as a checkbox).