-<b>Official LHAPDF 6.1 PDF sets: currently 638 available, of which 638 are validated.</b>
+<b>Official LHAPDF 6.1 PDF sets: currently 640 available, of which 640 are validated.</b>
See http://www.hepforge.org/archive/lhapdf/pdfsets/6.1 for data downloads.
All sets behave very closely to their LHAPDF v5 equivalents, usually within
1 part in 1000 across x,Q space, sometimes with larger very localised deviations at the
edges of the x,Q grid or on flavour thresholds: these should not be physically
important. See http://lhapdf.hepforge.org/validationpdfs/ for a full set of validation
plots for each set's central member.
In the table, green rows indicate sets which have been officially approved
for LHAPDF6 by their authors. Red rows indicate those which have not yet been so
approved. Unvalidated sets may still be used and have generally been seen to behave
faithfully to their LHAPDF5 equivalents (see above), but please take care.
<table>
<tr><th>%LHAPDF ID</th><th>Set name</th><th>Number of set members</th><th>Latest data version</th><th>Notes</th></tr>
<tr style="background-color: #efe;"><td>251</td><td><a href="http://www.hepforge.org/archive/lhapdf/pdfsets/6.1/GRVPI0.tar.gz">GRVPI0</a></td><td>1</td><td>1</td><td>alpha_s was broken in LHAPDF5. This version uses approximate 1st order running from reported Lambda4,5 values.</td></tr>
<tr style="background-color: #fee;"><td>10000</td><td><a href="http://www.hepforge.org/archive/lhapdf/pdfsets/6.1/unvalidated/cteq6.tar.gz">cteq6</a></td><td>41</td><td>-1</td><td>Corresponds to LHAPDF5's cteq6 or cteq6mE; central member equivalent to cteq6m.</td></tr>
<tr style="background-color: #fee;"><td>20460</td><td><a href="http://www.hepforge.org/archive/lhapdf/pdfsets/6.1/unvalidated/MRST2004qed.tar.gz">MRST2004qed</a></td><td>3</td><td>-1</td><td>This set has been superseded by the newer MRST2004qed_proton/neutron sets, and will not be officially validated. Please update to use the newer QED sets.</td></tr>