Table 2.

Impact weight of variables from different data sources on the proportion of influenza-like illness cases (ILI%) and the product of influenza-like illness cases and the influenza positive rate (ILI%×positive%).

Variables	Weight
	ILI	ILI×positive
Search index	0.085	0.081
Weekly temperature difference	0.083	0.072
Sunlight	0.081	0.066
Mean air pressure per week	0.077	0.074
Mean relative humidity per week	0.076	0.067
Mean wind speed per week	0.074	0.069
Mean temperature per week	0.073	0.083
Air quality index	0.072	0.088
Minimum temperature per week	0.070	0.080
Maximum temperature per week	0.069	0.073
Week	0.066	0.067
Precipitation	0.060	0.052
Gross domestic product	0.057	0.061
Year	0.046	0.057
Holiday	0.011	0.010