Function: min(band pass(minus(numbers('yxr'), numbers('yyx'))), minus(numbers('yxr'), numbers('yyx'))) if band pass(minus(numbers('yxr'), numbers('yyx'))) > min(min(band pass(minus(numbers('yxr'), numbers('yyx'))), minus(numbers('yxr'), numbers('yyx'))), band pass(minus(numbers('yxr'), numbers('yyx')))) else minus(numbers('yxr'), numbers('yyx'))