Relationship between the Month, Aeroallergens (pollen, mold), and Rainfall in Greenville, South Carolina

I created this table in response to patient questions about whether the rainfall affected pollen and mold counts. The necessary ingrediants are: hours of daylight, temperature, water, and source of plants or mold. The "best" circumstances for a good pollen season are high temperatures, intermittant heavy rainfall, plentiful living plants, and lots of sunshine.

Month	Tree pollen	Grass Pollen	Weed Pollen	Mold spores	Normal Rainfall (")
January	no	no	no	yes	4.41
February	yes	no	no	yes	4.41
March	yes	no	no	yes	5.31, most
April	yes, peak	yes	no	yes	3.54, least
May	yes	yes, peak	no	yes	4.59
June	no	yes	no	yes	3.92
July	no	yes	no	yes	4.65
August	no	no	yes	yes	4.08
September	no	no	yes, peak	yes	3.97
October	no	no	yes	yes	3.88
November	no	no	no	yes	3.79
December	no	no	no	no	3.86

Source: for rainfall, the National Weather Service.