Function: abs(numbers("xxr") if numbers("xxr") if mean(numbers("xxr"), numbers('yyx')) if numbers('xyy') > numbers("xxr") else numbers('yyx') > numbers('yyx') else mean(numbers("xxr"), numbers('yyx')) > numbers('yyx') if mean(numbers("xxr"), numbers('yyx')) > numbers('xyy') else numbers("xxr") else mean(numbers("xxr"), numbers('yyx')))