ENA/UHSAS/C1 - Intermittent spikes in the lower size bins

Intermittent spikes in the 3 lowest size bins. Other size bins should not be affected.

• Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)

ENA/UHSAS/C1 - Instrument not sampling ambient air

Instrument was periodically offline or not sampling ambient air for troubleshooting 
purposes. Data missing or no valid data.

• scattering_voltage
• base_time
• Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
• sheath_flow
• MET air temperature(temperature)
• sampling_volume
• purge_flow
• unit_temperature
• auxiliary
• reference
• current
• sample_pressure
• flow
• upper_size_limit
• lower_size_limit
• differential_voltage
• bin_num

ENA/C1 - Reprocess: Slightly incorrect location fields

Some of the instruments are being processed with the previous "GRW-Azores" lat/lon/alt 
instead of the new "ENA-Azores" lat/lon/alt. The differences are minor, but will be 
corrected. The respective GRW and ENA lat, lon, and alt values are as follows:
 
GRW  lat = 39.0911 ;
ENA lat = 39.0916 ;
GRW  lon = -28.0297 ;
ENA  lon = -28.0257 ;
GRW  alt = 26 ;
ENA  alt = 30.48 ;

• East longitude(lon)
• Altitude above mean sea level(alt)
• North latitude(lat)

• Altitude above mean sea level(alt)
• North latitude(lat)
• East longitude(lon)

ENA/UHSAS/C1 - High counts in lower size bins

High counts in the 3 lowest size bins. Other size bins should not be affected.

• Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)

ENA/UHSAS/C1 - missing data

Instrument's internal hard drive was full and no new data was being saved except a few 
samples occasionally.

• scattering_voltage
• time
• base_time
• Particle size distribution, limited by lower_size_limit and upper_size_limit(size_distribution)
• sheath_flow
• Altitude above mean sea level(alt)
• MET air temperature(temperature)
• North latitude(lat)
• sampling_volume
• time_offset
• purge_flow
• unit_temperature
• auxiliary
• current
• reference
• sample_pressure
• lower_size_limit
• flow
• upper_size_limit
• differential_voltage
• East longitude(lon)
• bin_num

ENA/CAPS-PMEX/NEPHELOMETER/PSAP/C1 - Impactor not switching

Impactor power accidentally unplugged. Impactor not switching and stuck in 10um position. 
The quality of data variables is not affected.

• impactor_setting

• impactor_setting
• Impactor particle size cut(impactor_state)

ENA/AOS/C1 -

During a measurement of the inlet flow rate, the cpcf inlet became plugged and the 
instrument was flooded with butanol.  After removing the butanol and allowing the system to dry, 
the cpc returned to normal operation.

• Concentration(concentration)