Series | CEA | BJEA | SHEA | GDEA | Carbon-Neutral Index |
ADF | −18.864*** | −30.150*** | −35.723*** | −49.657*** | −35.038*** |
AR order | 6 | 6 | 5 | 5 | 8 |
ARCH | 34.696*** | 24.164*** | 32.679*** | 194.555*** | 11.901*** |