Table 3. The best performances achieved by Persistence, AR(16), ARIMA(3,0,3), Seq2Seq, TCN, and SNAIL for one-week-ahead forecasts.

The performance metrics are averaged over 49 states. The symbols ↓ and ↑ indicate that the lower and higher values correspond to the better performance.

	Persistence	AR(16)	ARIMA(3,0,3)	Seq2Seq	TCN	SNAIL
RMSE (↓)	0.6218	0.6030	0.5871	0.5756	0.5543	0.5541
MAPE (↓)	12.37	12.86	11.90	11.14	10.98	10.86
L2E (↓)	0.2150	0.2231	0.2147	0.2012	0.1955	0.1937
PCORR (↑)	0.8950	0.9035	0.9017	0.9104	0.9157	0.9161