Function: mean(divide(numbers('yyx') if numbers("per") if numbers('xry') > numbers("xxr") else numbers('yyx') > numbers("per") else product(numbers('yyx') if numbers("per") > numbers("xxr") else numbers('xry'), numbers('yyx')), product(numbers("per") if numbers('xry') > numbers("xxr") else numbers('yyx'), numbers('yyx'))), numbers('yyx') if product(numbers('xry') if numbers("xxr") > numbers("per") else numbers('yyx'), numbers('yyx')) > numbers('xry') if numbers("xxr") > numbers('yyx') else numbers("per") else numbers("per"))