Table 2. Hong Kong: Cross-correlations between pre-whitened environmental series and the influenza counts.

Variable	Lag
	0	1	2	3	4	5	6	7
LST	0.0515	0.0083	−0.1835*	−0.1247	−0.1132	−0.2643*	−0.0638	−0.1572
RF	0.0005	−0.0063	0.1211	0.1417*	0.1045	0.1071	0.0960	0.0532
RH	0.1358*	0.2717*	0.1496*	0.1463*	0.0578	0.0745	0.0730	0.0359

*indicates significant at the two-standard error. See Table 1 caption for abbreviations.