Nuka-world add-on size (Fallout 4)

Greetings comrades, I watched the video from TwoDynamic
Spoiler
about the size of the DLC and a bit ofigel, its size is 3.66 GB more than far harbor, whoever thinks what. Interesting information was available on the editor https://www.reddit.com/r/fo4/comments/4x3k85 / nukaworld_spoilers_datamined_information_on_the /
can someone translate in a normal way.