ENA/ACSM/C1 - Missing Data

Data is missing due to a failed filter switching valve.  The replacement valve was 
delivered in June 2014.  There were tuning issues with the instrument and the instrument was 
successfully tuned on July 10, 2014, and started generating good data.

• Quality check results on field: Organic mass spectral error matrix(qc_org_mx_err)
• Mass concentration of total organics, ambient aerosol in air(total_organics)
• Mass concentration of chloride, ambient aerosol in air.(chloride)
• Quality check results on field: Mass concentration of chloride, ambient aerosol
  in air(qc_chloride)
• Organic mass spectral matrix(org_mx)
• -180.0 - +180.0(alt)
• Time range for the hourly averages, in time offset from midnight(time_bounds)
• lon(lon)
• Quality check results on field: Organic mass spectral matrix(qc_org_mx)
• Mass to charge ratios of ion fragments(amus)
• Quality check results on field: Mass concentration of total organics, ambient
  aerosol in air(qc_total_organics)
• Time offset from base_time(time_offset)
• Mass concentration of ammonium, ambient aerosol in air(ammonium)
• time_in_seconds_since_volume_start(time)
• North Latitude(lat)
• Mass concentration of nitrate, ambient aerosol in air(nitrate)
• Organic mass spectral error matrix(org_mx_err)
• Quality check results on field: Mass concentration of nitrate, ambient aerosol
  in air(qc_nitrate)
• Quality check results on field: Mass concentration of ammonium, ambient aerosol
  in air(qc_ammonium)
• Quality check results on field: Mass concentration of sulfate, ambient aerosol
  in air(qc_sulfate)
• base time in epoch(base_time)
• Mass concentration of sulfate, ambient aerosol in air.(sulfate)