The graphs on this page represent a comparison of the 24 hour particulate concentrations measured with continuous instruments (FDMS) used for near real-time data reporting against daily (24 hour) values measured with Federal Reference Method (FRM) filter based samplers. The real-time data values represent the best estimate of what the FRM values will be based on historic data. FRM sample values are generally available about 1 month after the sampling date.

Emmetsburg PM 2.5 - Warm Weather FDMS v FRM (May-September 2007)

Equation: y=0.9395x , R(squared)=0.9339
Units measured in µg/m³ - Micrograms per Cubic Meter of Air

Emmetsburg PM 2.5 - Cold Weather FDMS v FRM (October-April 2006-07)

Equation: y=0.9755x , R(squared)=0.884
Units measured in µg/m³ - Micrograms per Cubic Meter of Air

Emmetsburg PM 2.5 - Warm Weather FDMS v FRM (May-September 2006)

Equation: y=1.0314x , R(squared)=0.9605
Units measured in µg/m³ - Micrograms per Cubic Meter of Air

Emmetsburg PM 2.5 - Cold Weather FDMS v FRM (October-April 2005-06)

Equation: y=1.055x , R(squared)=0.7348
Units measured in µg/m³ - Micrograms per Cubic Meter of Air

Emmetsburg PM 2.5 - Warm Weather FDMS v FRM (May-September 2005)

Equation: y=0.9047x , R(squared)=0.9373
Units measured in µg/m³ - Micrograms per Cubic Meter of Air