Table 3.

Optimal time lags and Spearman correlation coefficients (CC) with the target variable.

Variable	Lag range tested	Optimal lag	CC
Cases	0–10 days	0 days	0.69
SII	6–16 days	9 days	−0.07
RHBO	0–10 days	0 days	0.51
Plano-SP	4–16 days	6 days	0.53
Vax	7–21 days	19 days	0.15