Table 4.

Results achieved by ARIMAX and EEMD-ARIMAX methods.

Region	City-Federative unit	ARIMAX			EEMD-ARIMAX
		ME	RMSE	MAE	ME	RMSE	MAE
North	Belém-PA (1,0,1)	3.213	139.121	100.688	−5.891	89.189	61.905
	Boa Vista-RR (0,1,1)	5.092	235.997	123.145	−2.248	159.335	97.518
	Macapá-AP (3,0,2)	0.229	185.697	79.845	−7.852	148.587	69.708
	Manaus-AM (2,1,3)	9.106	213.732	152.327	−12.994	142.140	102.373
	Palmas-TO (2,0,2)	-0.223	62.519	37.374	−0.168	53.240	34.604
	Porto Velho-RO (2,1,3)	6.074	186.198	104.206	0.266	162.095	98.116
	Rio Branco-AC (0,1,2)	1.088	46.482	28.736	−1.487	30.006	18.009
Northeast	Aracaju-SE (0,1,1)	1.413	163.284	91.061	−0.183	107.398	58.659
	Fortaleza-CE (1,0,1)	7.275	255.173	139.918	0.023	150.085	98.026
	João Pessoa-PB (3,0,2)	6.512	104.106	73.007	−0.629	61.758	42.498
	Maceió-AL (2,1,2)	0.646	89.629	54.596	0.010	61.337	41.793
	Natal-RN (1,0,3)	4.485	209.895	104.098	−12.078	183.497	99.912
	Recife-PE (3,0,2)	3.028	144.336	82.521	−6.969	114.020	69.529
	Salvador-BA (0,1,3)	3.456	329.488	197.839	−2.474	214.520	134.791
	São Luis-MA (2,0,3)	2.091	54.378	32.419	−2.704	32.342	19.566
	Teresina-PI (2,0,3)	0.703	78.607	59.522	−4.655	56.288	43.008
Midwest	Brasilia-DF (0,1,4)	5.992	272.017	173.067	3.756	176.154	111.602
	Campo Grande-MS (0,1,4)	4.305	130.909	65.215	−7.399	87.561	50.282
	Cuiabá-MT (1,0,4)	1.487	58.115	28.884	1.521	35.695	19.566
	Goiânia-GO (4,1,1)	7.194	262.247	165.356	−11.852	209.587	150.245
Southeast	Belo Horizonte-MG (2,1,3)	6.596	273.975	183.085	−1.762	186.489	123.697
	Rio de Janeiro-RJ (2,1,3)	12.532	444.872	294.399	−15.907	318.717	227.619
	São Paulo-SP (0,1,5)	18.479	988.765	660.780	4.203	775.817	494.870
	Vitória-ES (1,0,2)	3.598	62.274	42.943	1.440	41.234	27.729
South	Curitiba-PR (5,1,0)	0.843	127.775	76.223	−9.406	103.601	61.407
	Florianópolis-SC (0,1,3)	26.907	230.129	80.612	15.483	210.716	86.626
	Porto Alegre-RS (0,1,1)	25.704	373.925	140.315	−23.187	282.510	140.701