Table 2.

The 9 census divisions and the season and shift for which the division’s model had the highest r² value. The table also shows the root mean square error and the normalized root mean square error. The results presented correspond to the FluView, Symptoms, and Treatment pages aggregated.

Division	Season	Shift	r 2	Root mean square error	Normalized root mean square error
West North Central	2012-2013	None	0.955	0.367	0.057
Mountain	2012-2013	None	0.921	0.336	0.077
New England	2015-2016	None	0.920	0.096	0.096
East North Central	2012-2013	1 week	0.899	0.331	0.076
South Atlantic	2015-2016	None	0.893	0.218	0.065
Middle Atlantic	2015-2016	None	0.861	0.302	0.073
Pacific	2012-2013	None	0.849	0.503	0.094
West South Central	2012-2013	None	0.828	0.986	0.105
East South Central	2015-2016	1 week	0.793	0.365	0.082