Another late update. Apologies. It must be because winter is a-coming.
Another month has passed and so here is the updated Arctic sea ice volume graph as calculated by the Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS) at the Polar Science Center:
The October sea ice volume increase of 2592 km3, according to the PIOMAS model, was pretty much run of the mill. However, two years in the past decade do not fit that bill/mill, as they showed very muted growth during October: 2007 (1637 km3) and, of course, last year with 1648 km3 (things would get even crazier during November). 2017 is still fourth lowest on record, but the difference with 2012, 2016 and 2011 has grown and 2017 is now practically on a par with 2010.
Here's how the differences with previous years have evolved from last month:
And here's Wipneus' version of the PIOMAS graph (including 2007):