Function: band pass(numbers("xxr") if numbers('yyx') > numbers("xxr") else numbers('yxy') if numbers('yxy') if numbers('yyx') if numbers("xxr") > numbers('yxy') else numbers("xxr") > invert(numbers('yxy') if numbers("xxr") > numbers('yyx') else numbers("xxr")) else numbers("xxr") > numbers('yxy') else invert(numbers("xxr") if numbers('yxy') > numbers('yyx') else numbers("xxr")) if invert(numbers('yyx') if numbers("xxr") > numbers("xxr") else numbers('yxy')) if numbers('yxy') > numbers('yxy') if numbers("xxr") > numbers('yyx') else numbers("xxr") else numbers("xxr") > numbers('yxy') if numbers('yyx') > numbers("xxr") else numbers("xxr") else invert(numbers("xxr") if numbers('yyx') > numbers('yxy') else numbers("xxr")))