Function: mean(gradient[1](numbers("per") if numbers("xyx") > numbers("yxx") else numbers('rrr') if numbers("per") > numbers("yxx") else numbers('rrr') if numbers("per") > numbers("per") if numbers("xyx") > numbers("yxx") else numbers('rrr') else numbers("yxx")), numbers("per") if numbers('rrr') if numbers("per") > numbers("yxx") else numbers('rrr') if numbers("yxx") > numbers("per") else numbers("xyx") > numbers("yxx") else numbers('rrr') if numbers("per") > numbers("xyx") else numbers("yxx"))