Function: minus(mean(round(numbers("per"), numbers('ryy')) if numbers("per") > round(round(numbers("per"), numbers('ryy')), numbers("per")) else numbers('ryy'), round(round(numbers("per"), numbers('ryy')), numbers("per"))), numbers("per") if round(round(numbers("per"), numbers('ryy')), numbers("per")) > round(numbers("per"), numbers('ryy')) else numbers('ryy'))
