§ 1049.74 - Butterfat differential.

For milk containing more or less than 3.5 percent butterfat, the uniform price shall be increased or decreased, respectively, for each one-tenth percent butterfat variation from 3.5 percent by a butterfat differential, rounded to the nearest one-tenth cent, which shall be 0.138 times the current month's butter price less 0.0028 times the preceding month's average pay price per hundredweight, at test, for manufacturing grade milk in Minnesota and Wisconsin, using the “base month” series, adjusted pursuant to § 1049.51 (a) through (e), as reported by the Department. The butter price means the simple average for the month of the Chicago Mercantile Exchange, Grade A butter price as reported by the Department.