May have reached maximum extent on 26 Feb 2017, at 14.368 x10^6 sq km as
27 Feb had dropped to 14.341 and end of Feb is about the usual end of
the season.
Previous lowest maximum sea-ice extent for the Arctic , believed to be
14.517 x10^6 sq km, on 25 Feb 2015 (NSIDC method)
http://nsidc.org/arcticseaicenews/ch...sea-ice-graph/