; or (III) the average of the 2013–2015 and 2016–2018 design values for 24-hour averaging time of fine particulate matter, provided by the Environmental Protection Agency Administrator; bears to (IV) the primary national ambient air quality standard for fine particulate matter for 24-hour averaging time established by the Administrator under 109(b) of the Clean Air Act ( 42 U.S.C. 7409(b) ). (ii) Special rule If the average of design values from 2013–2015 and 2016–2018 are not greater than the primary national ambient air quality standards for particulate matter, a weighting factor of zero is applied. (iii) Maximum factor Notwithstanding clause (i), the maximum factor to be applied for fine particulate matter shall not exceed 1.4. (E) Design values of both ozone and particulate matter Notwithstanding subparagraphs (B) through (D), for counties with design values greater than the national ambient air quality standards for both ozone and particulate matter, a new factor, determined by multiplying the factors determined in subparagraphs (C) and (D), is applied to county populations in place of the individual factors determined in subparagraphs (C) and (D). (F) Minimum apportionment Notwithstanding any other provision of this paragraph, the minimum apportionment for a State under this paragraph shall be one half of 1 percent of the funds apportioned under this paragraph. (G) Maximum apportionment Notwithstanding any other provision of this paragraph, the maximum apportionment for a State under this paragraph shall be 25 percent of the funds apportioned under this paragraph. (H) Determinations of population In determining county population for purposes of this paragraph, the Secretary shall use the latest available annual estimates prepared by the Secretary of Commerce. . 3. Congestion mitigation and air quality improvement program Section 149 of title 23, United States Code, is amended— (1) in subsection (b)— (A) by striking , carbon monoxide, ; (B) by striking 186(a), ; (C) by striking 7512(a),