Station	Porte Mnteau lack test			Ljung-Box Q(LBQ)			Model
Station	Q	χ2_table	Decision	Q(r)	χ2_table	Decision	Model
Malakal	58.73	60.48	residuals are independent	59.67	60.48	residuals are independent	DARMA models(p, q)
Eldiem	34.72	61.65		36.4	61.65
Khartoum	54.25	58.12		56.14	58.12
Atbara	56.38	59.3		58.26	59.3
Dongola	50.25	54.57		53.35	54.57
Malakal	45.64	55.75	residuals are independent	54.57	55.75	residuals are independent	SARIMA models (p, d, q) × (P, D, Q)₁₂
Eldiem	51.39	60.48		52.32	60.48
Khartoum	60.99	61.78		61.43	61.78
Atbara	59.65	61.78		61.49	61.78
Dongola	48.78	58.16		55.92	58.16