Presenting a very slightly increasing average antarctic coverage trend over specifically 40 years as a refutation that antarctic polar ice is in retreat is misleading for a couple reasons. First, the last ten years appears to show strongly decreasing coverage trend which shows variability or a change in trend to integrate into any conclusions. Second, over that whole period the minimum coverage has a clear decreasing trend, again that should inform any expectations about where we are going.
Are you staking out a claim that antarctic ice is going to increase over the next few decades?