Mean count and proportion of particle size ranges of 300 to 500 nm and 500 to 1000 nm according to OPC measurements.

<p>Mean count and proportion of particle size ranges of 300 to 500 nm and 500 to 1000 nm according to OPC measurements.</p

Comparison of two Condensation Particle Counters (CPCs) below and above their dynamic upper limits (100,000 #/cc).

<p>The solid lines indicate mean percent difference; the dot-dashed lines indicate ±1.96 standardized deviations (SD) around the mean percent difference; the vertical dashed line represents the CPC's dynamic upper limit; the horizontal dashed line in A represents the CPC's dynamic upper limit; the horizontal dashed line in B represents a percent difference of 0.</p

Result of comparing CPC with SMPS.

<p>The solid lines indicate the mean percent difference; the dashed lines indicate ±1.96 standardized deviations (SD) around the mean percent difference; the vertical dashed line represents the CPC's dynamic upper limit; the horizontal dashed line represents a percent difference of 0.</p

Particle number size distributions of the NaCl aerosol particles measured by SMPS.

<p>The vertical solid line indicate a particle diameter of 100 nm.</p

Comparison of 500 to 1000 nm particle measurements by two Optical Particle Counters (OPCs).

<p>The solid lines indicate mean percent difference; the dot-dashed lines indicate ±1.96 standardized deviations (SD) around the mean percent difference.</p

Comparison of 300 to 500 nm particle measurements by two Optical Particle Counters (OPCs).

<p>The solid lines indicate mean percent difference; the dot-dashed lines indicate ±1.96 standardized deviations (SD) around the mean percent difference.</p