Table 4.

Cross-correlation values between the daily incidence of infection and the NAA values obtained varying the lag between the two series.

Lag (Days)	8	9	10	11	12	13	14
Bergamo	0.35	0.09	0.09	0.10	0.14	0.16	0.03
Brescia	0.40	0.04	−0.12	−0.19	−0.01	0.09	0.20
Como	−0.19	0.21	0.56	0.30	0.07	−0.09	−0.26
Cremona	0.36	−0.04	−0.18	−0.18	0.00	0.18	0.15
Lecco	−0.11	0.16	0.33	0.45	0.36	−0.02	−0.28
Lodi	0.24	0.01	−0.03	−0.04	0.00	0.13	−0.04
Mantova	0.21	−0.09	−0.19	−0.14	0.14	0.07	0.23
Milano	0.04	0.10	0.32	0.16	−0.03	−0.06	−0.11
Monza	0.05	0.25	0.38	0.33	0.13	−0.06	−0.13
Pavia	0.07	0.10	0.05	−0.04	0.04	−0.18	−0.17
Sondrio	−0.11	0.26	0.36	0.16	0.39	0.00	−0.17
Varese	−0.15	0.21	0.45	0.03	−0.04	−0.08	−0.19