| ADF | Phillips-Perron | ||
Level | ||||
Variables | Intercept | Trend & Intercept | Intercept | Trend & Intercept |
Co2 Per Capita | −0.0105 | −3.9313** | − 0.1172 | −2.3169 |
Per Capita % Of GDP | −6.6133* | −6.6682* | − 6.6134* | −6.6690* |
Coal Consumption | −0.4811 | −1.8007 | −0.2819 | − 2.5639 |
Natural Gas Consumption | 0.2805 | −1.9188 | 0.7109 | −1.6321 |
Oil Consumption | 1.0150 | −2.0356 | 1.2493 | −1.6065 |
First Difference | ||||
Co2 Per Capita | −6.6240* | − 6.5945* | − 6.6824* | − 6.6536* |
Per Capita % Of GDP | − 6.6240* | −11.3836* | − 6.6824* | − 26.4811* |
Coal Consumption | − 3.9032** | − 4.4879** | − 7.0700* | −7.1254* |
Natural Gas Consumption | − 3.5880** | − 3.7317** | − 3.5408* | −3.6997** |
Oil Consumption | −3.5999** | −4.0415** | − 4.0651** | − 4.7010** |