I mean 6th product from the top on the apple.com front page. Basically all product images with different level gray background on that page is good starting point to evaluate displays. Product photo in the middle allow you to "reset" you eyes to see difference in gray between left and right side.
Not bad, looks like average G9N. Not too much tint difference between left and right, just top part it pinkish.
My G9P is similar but also some pink tint on the right side but from what I tested demo G9P's they all had the same issue.
I had another g9n and the pnel was a bit cooler with a noticeable pink tint in the upper right. In my current unit is sligth pinky in the upper but you can notice it just in some extreme conditions so who cares.
in the other unit i can see the pink spot even in low light with tt on .