MAO/ACSM/S1 - Instrument shutdown

The data acquisition program locked up on 2015-06-24 and no data were collected.  Program 
was restarted 2015-06-26 15:06:39.

Data are unavailable for the period specified.

• Mass concentration of ammonium, ambient aerosol in air(ammonium)
• -180.0 - +180.0(alt)
• Mass concentration of sulfate, ambient aerosol in air.(sulfate)
• Time offset from base_time(time_offset)
• time_in_seconds_since_volume_start(time)
• Mass concentration of nitrate, ambient aerosol in air(nitrate)
• Mass concentration of total organics, ambient aerosol in air(total_organics)
• Mass concentration of chloride, ambient aerosol in air.(chloride)
• North Latitude(lat)
• base time in epoch(base_time)
• lon(lon)