ENA/UHSAS/C1 - missing data

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

• Auxiliary measurement, not implemented(auxiliary)
• Unit temperature(unit_temperature)
• Scatter signal(scattering_voltage)
• Lower particle size limit for each bin(lower_size_limit)
• Current(current)
• Particle size distribution(size_distribution)
• time_in_seconds_since_volume_start(time)
• Reference(reference)
• Main flow rate(flow)
• Differential_voltage, see instrument manual(differential_voltage)
• Sample pressure(sample_pressure)
• North Latitude(lat)
• Upper particle size limit for each bin(upper_size_limit)
• Sheath flow(sheath_flow)
• base time in epoch(base_time)
• Purge flow(purge_flow)
• Bin number(bin_num)
• Sample volume(sampling_volume)
• -180.0 - +180.0(alt)
• Time offset from base_time(time_offset)
• Temperature used for calculation(temperature)
• lon(lon)

• (Raw data stream - documentation not supported)