SGP/SONDE/B4 - Possible interference in B4 sounding 20021110.1729

There is a strange inversion aloft in the subject sounding.  The
temperature goes from -56.3 degC to -51.5 degC in less than two
minutes (approximately .72 km).  This is somewhat below the estimated
tropopause height.  I suspect this may be an interference problem,
but note that both the recorded pressure and RH values are reasonably
continuous.  More accurate assessment would require analysis of the
absolutely raw binary data; something that would require effort beyond
the limits of my IM funding.

Caveat emptor.

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

• (Raw data stream - documentation not supported)

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