SGP/SONDE/C1 - Soundings done as part of dual-sonde flights

The following soundings done during the subject time period were flown in dual-sonde mode 
in which the standard ARM RS92 radiosonde was attached to the same balloon with a NASA 
ATR (atmospheric temperature reference) radiosonde.  The radiosondes were separated by a 6' 
styrofoam bar.  To accommodate the additional weight, we used 1200g balloons rather than 
350g balloons.  Accordingly, we want to alert users that these soundings may reach 
higher altitudes than normal for ARM soundings and that the ascent rate may be somewhat 
higher.  The following soundings are affected:

Sequence  Date    UTC launch time
    1     2/22        0530
    2     2/22        1730
    3     2/22        2330 <---- No data: launch failure    
    4     2/23        0230
    5     2/23        0530
    6     2/23        1730    
    7     2/23        2030
    8     2/23        2330
    9     2/24        2330
   10     2/25        0215
   11     2/25        0509    
   12     2/25        1730
   13     2/25        1930
   14     2/25        2300

No corrections necessary.

• base time in epoch(base_time)
• -180.0 - +180.0(alt)
• Dry Bulb Temperature(tdry)
• Time offset from base_time(time_offset)
• Easterly Wind Component(u_wind)
• lon(lon)
• Wind status(wstat)
• V wind component(v_wind)
• Ascent rate(asc)
• North Latitude(lat)
• Relative Humidity (hybrid-b grid)(rh)
• Wind Direction(deg)
• Retrieved pressure profile(pres)
• Wind Speed(wspd)
• Dewpoint Temperature(dp)