Apple’s (AAPL) share of the global tablet market is in decline now that low-cost Android slates are proliferating, but the iPad still appears to be the most used tablet by a huge margin. Ad firm Chitika regularly monitors tablet traffic in the United States and Canada and in its latest report, Apple’s iPad was responsible for almost 90% of all tablet traffic across the company’s massive network.

Using a sample of tens of millions of impressions served to tablets between December 8th and December 14th this year, Chitika determined that various iPad models collectively accounted for 87% of tablet traffic in North America. That figure is down a point from the prior month but still represents a commanding lead in the space.

The next closest device line, Amazon’s (AMZN) Kindle Fire tablet family, had a 4.25% share of tablet traffic during that period, up from 3.57% in November. Samsung’s (005930) Galaxy tablets made up 2.65% of traffic, up from 2.36%, and Google’s (GOOG) Nexus 7 and Nexus 10 tablets combined to account for 1.06% of tablet traffic in early December.

“Despite these gains by some of the bigger players in the tablet marketplace, there has been a negligible impact to Apple’s dominant usage share,” Chitika wrote in a post on its blog.

Zach Epstein has worked in and around ICT for more than 15 years, first in marketing and business development with two private telcos, then as a writer and editor covering business news, consumer electronics and telecommunications. Zach’s work has been quoted by countless top news publications in the US and around the world. He was also recently named one of the world's top-10 “power mobile influencers” by Forbes, as well as one of Inc. Magazine's top-30 Internet of Things experts.