determines and announces that for any consecutive 4-week period, the Friday through Thursday average price quotation for the lowest-priced United States growth, as quoted for Middling (M) 1 3/32 -inch cotton, delivered to a definable and significant international market, as determined by the Secretary, exceeds the prevailing world market price, there shall immediately be in effect a special import quota. (3) Quantity The quota shall be equal to the consumption during a 1-week period of cotton by domestic mills at the seasonally adjusted average rate of the most recent 3 months for which official data of the Department of Agriculture are available or, in the absence of sufficient data, as estimated by the Secretary. (4) Application The quota shall apply to upland cotton— (A) purchased not later than 90 days after the date of the announcement of the Secretary under paragraph (2)