I noticed today that the compression ratio for an interleaved phylip file (zip 
compressed) was about 84:1, (390MB uncompressed —> 4.6MB compressed) whereas 
the compression ratio for the same data non-interleaved was a much worse 3.4:1 
(390 MB uncompressed —> 113.9 MB). Not knowing much about how zip compression 
actually works - I thought this might be an interesting observation for the 

Jake Berv
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