Table 3-11, Winter Air Temperature Index for prediction of Stewart's disease

Table 3-11, Winter Air Temperature Index for prediction of
Stewart's disease. (Stevens-Boewe disease forecasting system)
Air Temperature Index	Disease Severity Prediction
-3.3 to 2.2°C (90 to 100°F)	Severe
-6.2 to -3.3°C (85 to 90°F)	Moderate to severe
-8.8 to -6.2°C (80 to 85°F)	Light to moderate
Below -8.8°C (<80 °F)	Trace amounts