SGP/GPS/X1 - GPS antenna upgrades

Seth Gutman from NOAA/FSL informed me that the GPS antennas at three of
the sites in their network were replaced with newer models.  These newer
antennas should result in better retrievals of PWV from the GPS.  These
sites and the dates the antennas where changed are:

	Lamont  	12/23/1999
	Purcell		12/26/1999
	Plattville	12/16/1999

• (Raw data stream - documentation not supported)

• lon(lon)
• Alphanumeric station name(staNam)
• Water Vapor(waterVapor)
• -180.0 - +180.0(alt)
• Dry component GPS signal delay(dryDelay)
• Time of observation(timeObs)
• Station Location(staLongNam)
• Total GPS signal delay(totalDelay)
• base time in epoch(base_time)
• Formal Error(formalError)
• Derived pressure(pressure)
• Wet component GPS signal delay(wetDelay)
• Time offset from base_time(time_offset)
• Temperature used for calculation(temperature)
• North Latitude(lat)