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    Hi George,<br>
    <br>
    this can happen. If you were refining against reflections from that
    shell only I'm sure Rfree would be greater than Rwork. I'm not sure
    how to make sense of comparisons Rfree vs Rwork calculated per
    resolution shell.<br>
    <br>
    Pavel<br>
    <br>
    <div class="moz-cite-prefix">On 1/26/15 1:05 PM, George Devaniranjan
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAFU65Pes1496qbi7wbLGWGq=6xzHY57He52BCRW-52iEw_0ZFw@mail.gmail.com"
      type="cite">
      <div dir="ltr">Hi,
        <div><br>
        </div>
        <div>I calculated/validated several PDB structures in
          Phenix.Validation (GUI)</div>
        <div><br>
        </div>
        <div>The R/R-free (overall) is</div>
        <div><br>
        </div>
        <div>0.1271/0.1348</div>
        <div><br>
        </div>
        <div>Further down I looked at the R/R-free for the highest
          resolution shell.</div>
        <div><br>
        </div>
        <div>Its 0.2538/0.2446</div>
        <div><br>
        </div>
        <div>I am curious why the R-free for the <b><u>highest
              resolution shell</u></b> seems to be LOWER than R (work).</div>
        <div><br>
        </div>
        <div><br>
        </div>
        <div>Am I reading the information wrong? </div>
        <div><br>
        </div>
        <div>PDB: 3QL9</div>
        <div><br>
        </div>
        <div>Thank you,</div>
        <div>George</div>
      </div>
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