(a) the Class I price for the following month applicable at the 201-210 mile zone and at the 1-10 mile zone;

(b) the Class II price for the following month applicable at the 201-210 mile zone and at the 1-10 mile zone;

(c) the Class III and Class III-A prices for the preceding month applicable at the 201-210 mile zone and at the 1-10 mile zone;

(d) the producer butterfat differential for the preceding month;

(e) the basic formula price for the preceding month, pursuant to section 20.51 of this Part, as reported, by the United States Department of Agriculture;

(f) the average price per hundredweight for manufacturing grade milk, f.o.b. plants in Wisconsin and Minnesota, using the "base month" series, for the second preceding month, as reported by the United States Department of Agriculture;

(g) the average price per pound, of Grade A (92-score) butter, at the Chicago Mercantile Exchange, for the preceding month, as reported by the United States Department of Agriculture; and

(h) the average price per pound, of nonfat dry milk, f.o.b. western area, for the preceding month, as reported by the United States Department of Agriculture.