That file is not really the actual data.  It is merely a summary
of the underlying data.  If you have the kent source tree, you
can query this table via the public MySQL server:
http://genomewiki.ucsc.edu/index.php/Using_hgWiggle_without_a_database

Or, you can generate your own window size GC contents measurements
with the kent source tree program: hgGcPercent

Or, you can load a custom track of the regions of interest and have
the table browser emit the data values for those regions.

--Hiram

----- Original Message -----
From: "Yiwen Chen" <[email protected]>
To: [email protected]
Sent: Monday, July 19, 2010 8:10:43 PM GMT -08:00 US/Canada Pacific
Subject: [Genome] Question about gc5Base.txt

Dear all,

I am trying to calculate gc content of a given set of genomic regions using
gc5Base.txt with dm3. I was wondering where I can find the documentation on
what each field represents
in the gc5Base.txt.

Thank you very much.

Sincerely,
Yiwen Chen
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