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Following Apple’s launch of iOS 7.1, the first major update to the OS that featured CarPlay, iBeacon imrpovements, and more, mobile analytics firm Chitika has released some numbers regarding the software’s adoption rate. According to the company’s detailed report, the update saw a 5.9% installation rate during its first 24 hours of availability.

The numbers are a little bit BS because obviously a non-zero percentage of users were developers and Apple employees using the 7.1betas. Here are 9to5mac’s numbers for instance.

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The data was collected from “tens of millions” of users in the United States and Canada, though the study doesn’t state the exact sample size. The full version of the report notes that the company typically employs a sample size of around 300 million devices.

That may seem low compared to the ridiculously fast adoption of iOS 7 last year, but Chitika reported similiar numbers for the previous update, iOS 7.0.6, which contained a critical SSL bug fix. Meanwhile, the entire set of 7.x updates has seen slowing growth in recent months, according to Apple…

As shown on the charts above, via Apple’s iOS developer center, iOS 7 has gained only 1% of the total iOS market share in the past two weeks (the entirety of which came from iOS 6). The numbers from Apple were released just before the iOS 7.1 update, but it’s safe to assume that the release of that update did not lead to a major influx of users leaving iOS 6.x for the redesigned operating system.

Chitika’s research corraborates this finding, noting that as “more than 80%” of the web traffic it saw over a three-day period was generated by iOS 7. That number has mostly remained unchanged, prompting Chitika to propse that this is the highest adoption rate we’ll see for iOS 7, though each successive version of iOS has seen higher adoption rates. If that pattern persists, Apple could see iOS 8 adoption rates well above 80%.

Interestingly, according to Apple, the number of users running versions of iOS older than 6.0 is holding steady at 3%. Give that even the nearly-five-year-old iPhone 3GS can run iOS 6, it’s hard to imagine how so many users are still back on version 5 or below.