Long logs of position and time data from STATIONARY recievers

Anyone know of availability of large volumes of position/time/date data for fixed stations?

I'm interested in errors in GPS. Sam's and Dale's have much info on sources and relative magnitudes. However all the plots either cover a relatively short time or display a "total position" error. I'd like to observe North, South, and Vertical errors independently over a time period of up to a year.

I would also like to compare data from locations a few tens of miles to a few hundred miles apart. The object would detecting effects of large weather systems -- I live near tornado alley. http://edu-observatory.org/gps/gps_accuracy.html etc. got me interested in effects of atmospheric water vapor (see http://www.etl.noaa.gov/technology/archive/gps/ , http://www.research.noaa.gov/weather/t_systems.html , etc).

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