ANCOVA index 0 = 0.41108 absolute error=4.0e-03
ANCOVA uncorrelated index 0 = 0.29868 absolute error=3.2e-03
ANCOVA index 1 = 0.58892 absolute error=4.0e-03
ANCOVA uncorrelated index 1 = 0.47653 absolute error=4.8e-03
