Function: band pass(minus(numbers('epe') if gradient[1](numbers('epe')) > numbers('xry') else numbers('rrr') if numbers('epe') > gradient[1](numbers('epe')) if numbers('xry') > numbers('xry') if numbers('rrr') > gradient[1](numbers('epe')) else numbers('epe') else numbers('epe') else gradient[1](numbers('epe')), gradient[1](numbers('epe')) if numbers('epe') > numbers('epe') if gradient[1](numbers('epe')) > numbers('xry') else numbers('rrr') else numbers('xry')))