| pi_AR_perc | Prediction intervals based on AR-perc algorithm |
| pi_AR_proot | Prediction intervals based on AR-proot algorithm |
| pi_BJ | Prediction intervals based on the Box-Jenkins method |
| pi_CB | Prediction intervals based on the CB algorithm |
| pi_PP | Prediction intervals based on PP algorithm |
| pi_PRR | Prediction intervals based on the PRR algorithm |
| pi_QAR_perc | Prediction intervals based on QAR-perc algorithm |
| pi_QAR_proot | Prediction intervals based on QAR-proot algorithm |
| pi_TS | Prediction intervals based on the TS algorithm |
| pi_X | Prediction intervals based on X algorithm |