SGP/AOS/C1 - Under counting of CPC

The CPC count was lower than the CCN at the highest percent super saturation value (~1%) 
indicating an undercounting of the CPC due to either clogging or water condensing in the 
butanol. The CPC was removed and cleaned. The increase in signal relative to the CCN after 
cleaning was 5-10%.

Use data qualitatively as a measure of the variation in the aerosol concentration or 

increase by 5-10% for values that are closer to the maximum possible CCN concentration.

• concentration

• concentration