Equal mass BBHs, nonspinning, maximal slice, lapse BC (59a)

These data sets correspond differ from those of Table V of Caudill,
Cook, Grigsby & Pfeiffer, 2006 the lapse-boundary condition on the
excision surfaces.


They were computed as follows:


1. Solve the initial value problem as described in Cook & Pfeiffer
   with excision radius 0.85949977036002983, and with the centers of the
   excised spheres at locations +d/2 and -d/2 along the x-axis.
   (Therefore, 0.859... is the radius of the apparent horizon in the
   data sets).

2. Extrapolate conformal factor, shift and Lapse*psi into the excised
   regions down to an inner radius of 0.75*r_{AH}. This is the minimal radius
   for which the data sets contain data.

3. Compute lower metric, lower extrinsic curvature, lapse and shift
   from the extrapolated data.  Note that the extrapolation does not
   incorporate the constraints, and therefore the constraints are not
   necessarily satisfied interior of the apparent horizons.




The data sets are labeled by separation d.  Each archive contains:

- Several subdirectories LevX with the actual data.  The number 'X' denotes 
  the refinement factor of the data; the larger 'X', the higher the accuracy.

- A text file "Omega," containing the unscaled orbital angular frequency
  for this data set.  This number needs to be passed into the function
  ReadData (see PublicID.hpp).

Note: Omega is adjusted so that Komar-mass and ADM-energy are equal.
However, this adjustment has been performed on the comparatively
coarse resolution Lev2.  Therefore, ADM-energy and Komar-mass coincide
only to the truncation error of Lev2.