Your graph is showing that the amount of ice is decreasing by a very slight amount I cannot see how you can say that it is well above normal from your graph.
Your graph is totally at odds with the photos of the Artic ice belt that have been taken by satellite
Sat photos show that the Ice is retreating, they can be taken every day. But just one photo taken every 3 months will show you the real truth.
There is nothing worse than a graph taken about the earths condition that has different time interval steps.
Your graph has so many points in it that they could never be taken in practice. I suspect just a few points have been taken and the rest is integrated.

Thanks
Blobby2