Coefficients: generalized least squares

Number of obs = 420

Panels: heteroskedastic

Number of groups = 15

Correlation: panel-specific AR(1)

Time periods = 28

Estimated covariances = 15

Wald chi2(20) = 501.36

Estimatedautocorrelations = 15

Prob > chi2 = 0.0000

Estimated coefficients = 20