SGP/SONDE/C1 - Surface pressure bad and other data noisy

I was checking this sounding because the surface pressure entered by the operator was 
considerably higher than that recorded by the TWHAPS and SMOS.  I'm not sure why, but the 
pressure data are very noisy while the sonde is on the ground (which accounts for the 
incorrect surface pressure) and the RH data aloft do not look terrible but do not look great 
either.

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• 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)