In this directory, there are preliminary GPS time series provided by the ARIA team at 
JPL and Caltech. 

These files are kinematic precise point positioning solutions using JPL's
GIPSY-OASIS software, including single station bias fixing method, and JPL's 
orbit and clock products.   

In your use of these time series, please use the following accreditation:
"Preliminary GPS time series provided by the ARIA team at JPL and Caltech."

Time tags are in GPS Time (offset from UTC since GPS time is not perturbed by
leap seconds).


Explanation of llh_cal files
------------------------

Each file contains set of 3 rows for each solution epoch. They are same solution, in different formats

1st row - lat, lon, height (m), sigma (m)
2nd row ("nev") - north, east, up, sigma in meters (relative to first epoch solution)
3rd row ("est") - north, east, up, sigma in meters (relative to a priori position value)

Columns are:

Year Month Day Hour Min Sec "J2000 seconds"  obs1 obs2 obs3 Sigma Site "row name"

For questions, contact ARIA team at aria@jpl.nasa.gov or aria@caltech.edu