These are for ESB. I don't think ANH is any different, but I would have to check. As dark_jedi reminded me, ROTJ would have different values, as it is based on the PAL version.
By the way, these values are for an anamorphic DVD.
EDIT: ANH is different. I edited the previous post.
EDITED AGAIN: I removed the third option as it was wrong. My mistake!