  We find that the precision and accuracy of current experimental data on the
moduli of nine Cabibbo-Kobayashi-Maskawa (CKM) quark flavor mixing matrix
elements allow us to numerically determine the it correct size of the Jarlskog
invariant of CP violation from four of them in eight different ways for the
first time without making any special assumptions. This observation implies a
remarkable self-consistency of the correlation between CP-conserving and
CP-violating quantities of the CKM matrix as guaranteed by its unitarity.
