  We have modified the graphical user interfaced close binary system analysis
program CurveFit to the form WinKepler and applied it to 16 representative
planetary candidate light curves found in the NASA Exoplanet Archive (NEA) at
the Caltech website http://exoplanetarchive.ipac.caltech.edu, with an aim to
compare different analytical approaches. WinKepler has parameter options for a
realistic physical model, including gravity-brightening and structural
parameters derived from the relevant Radau equation. We tested our best-fitting
parameter-sets for formal determinacy and adequacy.
  A primary aim is to compare our parameters with those listed in the NEA.
Although there are trends of agreement, small differences in the main parameter
values are found in some cases, and there may be some relative bias towards a
90 degrees value for the NEA inclinations. These are assessed against realistic
error estimates.
  Photometric variability from causes other than planetary transits affects at
least 6 of the data-sets studied; with small pulsational behaviour found in 3
of those. For the false positive KOI 4.01, we found that the eclipses could be
modelled by a faint background classical Algol as effectively as by a
transiting exoplanet. Our empirical checks of limb-darkening, in the cases of
KOI 1.01 and 12.01, revealed that the assigned stellar temperatures are
probably incorrect. For KOI 13.01, our empirical mass-ratio differs by about 7%
from that of Mislis and Hodgkin (2012), who neglected structural effects and
higher order terms in the tidal distortion. Such detailed parameter evaluation,
additional to the usual main geometric ones, provides an additional objective
for this work.
