what do the icons mean?

The icons represent the products produced by a particular dairy. Here's a list of all the possible products.

Raw Milk for Pasteurization (May include Lowfat, Skim or Cream) Raw Milk for Pasteurization (May include Lowfat, Skim or Cream)
Pasteurized Milk, Reduced Fat, Lowfat and Skim Pasteurized Milk, Reduced Fat, Lowfat and Skim
Heat-Treated (May Include Reduced Fat, Skim, Lowfat or Cream) Heat-Treated (May Include Reduced Fat, Skim, Lowfat or Cream)
Pasteurized Half and Half, Coffee Cream, Creams Pasteurized Half and Half, Coffee Cream, Creams
Ultra-Pasteurized Milk and Milk Products Ultra-Pasteurized Milk and Milk Products
Aseptic Milk and Milk Products (Including Flavored) Aseptic Milk and Milk Products (Including Flavored)
Cottage Cheese (Including Lowfat, Nonfat or Dry Curd) Cottage Cheese (Including Lowfat, Nonfat or Dry Curd)
Cultured or Acidified Milk and Milk Products Cultured or Acidified Milk and Milk Products
Yogurt (Including Lowfat or Skim) Yogurt (Including Lowfat or Skim)
Sour Cream Products (Acidified or Cultured) Sour Cream Products (Acidified or Cultured)
Whey (Liquid) Whey (Liquid)
Whey (Condensed) Whey (Condensed)
Whey (Dry) Whey (Dry)
Modified Whey Products (Condensed or Dry) Modified Whey Products (Condensed or Dry)
Condensed Milk and Milk Products Condensed Milk and Milk Products
Nonfat Dry Milk Nonfat Dry Milk
Buttermilk (Condensed or Dry) Buttermilk (Condensed or Dry)
Eggnog Eggnog
Lactose Reduced Milk and Milk Products Lactose Reduced Milk and Milk Products
Low-Sodium Milk and Milk Products Low-Sodium Milk and Milk Products
Milk and Milk Products with Added Safe and Suitable Microbial Organisms (Such as Lactobacillus acidophilus) Milk and Milk Products with Added Safe and Suitable Microbial Organisms (Such as Lactobacillus acidophilus)
Dry Milk and Milk Products Dry Milk and Milk Products
Anhydrous Milk Fat Anhydrous Milk Fat
Cholesterol Modified Anhydrous Milk Fat Cholesterol Modified Anhydrous Milk Fat
Cholesterol Modified Fluid Milk Products Cholesterol Modified Fluid Milk Products
Cream (Condensed or Dry) Cream (Condensed or Dry)
Blended Dry Products Blended Dry Products
Whey Cream Whey Cream
Whey Cream and Cream Blends Whey Cream and Cream Blends
Grade Grade 'A' Lactose
Raw Goat Milk for Pasteurization Raw Goat Milk for Pasteurization
Pasteurized Goat Milk and Milk Products Pasteurized Goat Milk and Milk Products
Cultured Goat Milk and Milk Products Cultured Goat Milk and Milk Products
Condensed or Dry Goat Milk and Milk Products Condensed or Dry Goat Milk and Milk Products
Ultra-Pasteurized Goat Milk and Milk Products Ultra-Pasteurized Goat Milk and Milk Products
Aseptic Goat Milk and Goat Milk Products Aseptic Goat Milk and Goat Milk Products
Raw Sheep Milk for Pasteurization Raw Sheep Milk for Pasteurization
Cultured Sheep Milk and Milk Products Cultured Sheep Milk and Milk Products
Concentrated Raw Milk Products for Pasteurization Concentrated Raw Milk Products for Pasteurization
Concentrated Pasteurized Milk Products Concentrated Pasteurized Milk Products
Ultrafiltered Permeate from Milk Ultrafiltered Permeate from Milk
Ultrafiltered Permeate from Whey Ultrafiltered Permeate from Whey