Rank data missing for 2011?

[Ronan Cremin]

After plotting page growth over the years using BigQuery I have a question about the 2011 data. 

SELECT url, rank FROM [httparchive:runs.2011_01_31_pages] WHERE rank BETWEEN 1 AND 100; // zero records
.
.
SELECT url, rank FROM [httparchive:runs.2011_10_15_pages] WHERE rank BETWEEN 1 AND 100; // zero records

So rank data seems to be missing for about Jan-Sep in 2011, but the httparchive.org site has ranked stats available for these months. Did some data go missing somewhere?

Thanks,

Ronan

[*...@souders.org]

I believe we started doing rank at the end of 2011.

-Steve

[Ronan Cremin]

Thanks Steve—I'm guessing that this data was added to the httparchive.org reports using some other process as Ilya suggested. 

Ronan