### Question
How is the "final deteriorated test results" defined?


### Answer
The term **final deteriorated test results** is defined in *40 CFR § 86.1* as follows -

> the final test results derived in paragraph (b) of this section for each test vehicle, rounded to the same number of significant figures contained in the applicable standard in accordance with ASTM E 29-90, Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

#### Citation:
  - *40 CFR § 86.1*
  - Heading: **PART 86—CONTROL OF AIR POLLUTION FROM NEW AND IN-USE MOTOR VEHICLES AND NEW AND IN-USE MOTOR VEHICLE ENGINES: CERTIFICATION AND TEST PROCEDURES > Subpart AA—Reporting and Recordkeeping Requirements for Part 86 > SUBCHAPTER C—AIR PROGRAMS—(Continued) > SUBCHAPTER C—AIR PROGRAMS—(Continued)**

