Low-Calorie Cookbook help with the ounces!

sole_ve

Hello!

I have started to cook with a low calorie book "Mix and Match Low-Calorie Cookbook" from Cooking Light series.. so in some recipes i have found for example:

to prepare Beef tenderloin Steaks, the ingredient says:
4 (4-ounce) beef tenderloin steaks (1 inch thick), trimmed.

and to prepare Cilantro-Lime Chicken says:
4 (6-ounce) skinless, bonless chicken breast halves.

Now my question is:

Are the ounces all together or each piece of meat?

I have to prepare for the beef with 16 ounces of beef 4-ounces each?
and about chicken, they are 24 ounces of chicken 6-ounce each?

Thanks ;-)