Function: mean(sum(minus(numbers("xyx") if numbers('xyy') > numbers('epe') else numbers('rrr'), numbers('xyy')), numbers('epe') if numbers('xyy') > numbers('rrr') else numbers("xyx")) if numbers('xyy') > numbers('epe') if numbers("xyx") > numbers('xyy') else numbers('rrr') else minus(numbers('rrr') if numbers('xyy') > numbers("xyx") else numbers('epe'), numbers('xyy')), sum(minus(numbers('epe') if numbers('xyy') > numbers('rrr') else numbers("xyx"), numbers('xyy')), numbers('xyy') if numbers('rrr') > numbers("xyx") else numbers('epe')))
