Table 1

Summary of State-Year Malaria and Weather Data, 1900–36

	Low Malaria States		High Malaria States
	Mean	Standard Deviation	Mean	Standard Deviation
Malaria death rate (per 100,000)	0.593	1.231	9.472	9.785
Fraction of year below 0°C	0.178	0.077	0.056	0.059
Fraction of year 0°C–8°C	0.230	0.049	0.156	0.063
Fraction of year 8°C - 15°C	0.205	0.058	0.199	0.031
Fraction of year 15°C–22°C	0.249	0.046	0.251	0.035
Fraction of year 22°C–28°C	0.126	0.047	0.255	0.064
Fraction of year 28°C–34°C	0.013	0.018	0.084	0.061
Fraction of year above 34°C	0.000	0.001	0.000	0.002
Daily precipitation (inches)	0.101	0.029	0.124	0.029
Malaria state-year observations	882		265
Weather state-year observations	1,258		555

Notes: All calculations were weighted by the underlying number of census observations in a given state-year cohort cell.