SGP/ACSM/C1 - Pump failure

The carbon vane vacuum pump that pulls air through the instrument failed again and a 
section of tubing between the ACSM and pump was partially collapsed.  The pump and tubing were 
replaced and returned to service at 2223 GMT on 12/18/2012. The ACSM was then tuned 
before resuming data collection at 2130 GMT on 12/21/2012.

Do not use data

• (Raw data stream - documentation not supported)

• Mass concentration of total organics, ambient aerosol in air(total_organics)
• flow rate measured by the mass flow controller(flow_rate)
• Inlet closed(inlet_closed)
• Mass concentration of chloride, ambient aerosol in air.(chloride)
• Inlet open(inlet_open)
• Emission current(emission_current)
• Mass concentration of sulfate, ambient aerosol in air.(sulfate)
• Mass concentration of ammonium, ambient aerosol in air(ammonium)
• Vaporizer(vaporizer)
• Mass concentration of nitrate, ambient aerosol in air(nitrate)

• (Raw data stream - documentation not supported)

• Organic mass spectral matrix(org_mx)
• Mass concentration of ammonium, ambient aerosol in air(ammonium)
• Mass concentration of sulfate, ambient aerosol in air.(sulfate)
• Mass concentration of nitrate, ambient aerosol in air(nitrate)
• Mass concentration of total organics, ambient aerosol in air(total_organics)
• Mass to charge ratios of ion fragments(amus)
• Mass concentration of chloride, ambient aerosol in air.(chloride)
• Organic mass spectral error matrix(org_mx_err)