HFE/AOS/M1 - CPC and CCN data questionable

The CPC slowly clogged and the signal declined until the instrument was cleaned at which 
point the signal would increase. The data is still a good relative measure of the daily 
changes in the CN concentration, but the absolute value may be too low.

The mentor was unable to monitor the flow rate and operation in the CCN during operation. 
The relative changes in CCN with %ss are likely fine, but the absolute values may be too 
low or too high. Dust was prevalent at the site and likely contributed to the CCN signal 
such that large dust particles appeared as droplets.

Consult with mentor as to intended use of data

• Cloud condensation nuclei number density(N_CCN)
• AOS CCN number concentration by bin(N_CCN_dN)
• AOS CCN volumetric flowrate of sheath air(CCN_Q_sheath)
• AOS CCN volumetric flowrate of sample air(CCN_Q_sample)

• Condensation nuclei concentration number(N_CPC_1)
• Cloud condensation nuclei number density(N_CCN)