cache usage interpretation required

DMZ QUESTIONShown below is my cache usage chart for January.

There is some confusions as to how Objects returned from the Internet
can be 1.7GB out of 2.3 GB yet Objects returned from cache without
verification  can be 78.8%?

What am I missing?



      Status Requests % of Total Requests Total Bytes
      Objects returned from the Internet  156679  14.1 % 1.7 GB
      Objects returned from cache without verification  876092  78.8 %
265.3 MB
      Objects returned from the Internet, updating a file in cache
48869  4.4 % 261.2 MB
      Objects returned from cache after verifying that they have not
changed  29906  2.7 % 116.5 MB
      Information not available  64  0.0 % 9.3 KB
      Total  1111610  100 % 2.3 GB



Thanx,

Bob

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