Re: Tor in China

[Karsten Loesing <karsten.loesing@xxxxxxx>]

On 2/19/10 7:13 PM, Karsten Loesing wrote:
> On 2/19/10 5:00 PM, Andrew Lewman wrote:
>> On 02/19/2010 05:20 AM, onion.soup@xxxxxxxxxxxx wrote:
>>> http://metrics.torproject.org/bridge-users-graphs.html#china
>>>
>>> if there is no clear explanation account for the doubling of the 
>>> usage figure in the whole December, i would speculate that this is 
>>> an error in the estimation. could anyone confirm this?
>>
>> The best person to answer this is Karsten, and he's currently traveling.
>>   We await his answer.
> 
> That's a fine question. It's already on my list. I'll let you know as
> soon as I have a better answer than "probably something wrong with the
> measurements."

I figured out the problem. The metrics portal had the bridge user
numbers from 2009-11-30 to 2010-01-05 imported twice. This affected all
countries, but was simply most visible for Chinese bridge users. I
removed those days from the stats and imported the descriptors again.

The corrected graphs can be found on the graphs page:

  http://metrics.torproject.org/bridge-users-graphs.html#china

For reference, here is one of the old graphs:


http://freehaven.net/~karsten/volatile/china-bridges-180d-bug-2010-03-10.png

Thanks for letting us know!

--Karsten
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