Function: mod(numbers('xry') if 10 *(mean(numbers('xry'), numbers("xxr"))) > mean(numbers('xry'), numbers("xxr")) else minus(10 *(mean(numbers('xry'), numbers("xxr"))), mean(numbers('xry'), numbers("xxr"))), minus(10 *(mean(numbers('xry'), numbers("xxr"))), mean(numbers('xry'), numbers("xxr"))))