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Table 1 Estimates of d on the individual series. Parametric approach

From: Analysing the relationship between CO2 emissions and GDP in China: a fractional integration and cointegration approach

Series d (95% band) Intercept A time trend
No autocorrelation
 Log CO2 1.87 (1.77, 2.01) 12.806 (3344.17)
 Log GDP 1.92 (1.79, 2.06) 6.797 (2226.49) 0.018 (4.64)
With autocorrelation
 Log CO2 1.91 (1.69, 2.21) 12.803 (2519.22)
 Log GDP 1.82 (1.59, 2.14) 6.791 (2144.61) 0.019 (4.75)