Having read a LOT of posts on the subject, talked with the Nikon shop tech who does this work, and personal experience, I would say: "Yes, those figures are within normal tolerance".
You did not ask, but I would encourage you to take it outside (or inside but outside your home) and try lots of different lighting and shooting solutions; use it handheld, on the tripod, on a beanbag, leaned up against a pillar, whatever, and experiment with what works for you. IOW - develop your own feel and knowledge base. Advice is useful, and on this forum generally polite and patient, but experience is the best teacher. Enjoy the D600! It will be a new experience, and occasionally "wow" you with its qualities.