If you check out:
  http://www-d0.fnal.gov/~tadams/tt2bvsprec1.eps
you will see a plot of Run 2b L1Cal trigger towers compared to precision
readout.  Precision readout is on the y-axis while L1Cal TT is
on the x-axis.  Both are in GeV.  This is for one TT, but the
other three are similar.  The left plot is for EM TT while the
right is for HAD TT.

You will note the data points now lie on a straight line after
fixing a mapping problem to compare the proper channels to each
other.  The EM plot has a problem which is consistent with loss
of one bit and is being investigated.

But we have now observed Run2b trigger towers which are correlated
to the precision readout (and Run 2a TT)!

Congratulations to the integration team for getting the system
working and for getting this data recorded during the Friday
downtime.  -  Todd