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
• staNam
• waterVapor
• alt
• dryDelay
• timeObs
• staLongNam
• totalDelay
• base_time
• formalError
• pressure
• wetDelay
• time_offset
• temperature
• lat