The core product of the EUREF Permanent Network is the weekly coordinate estimates for the EPN tracking stations and their covariance information in the SINEX format. These coordinates are outcome from the so-called "combined EPN solution" which is based on the subnetwork solutions submitted by the EPN Analysis Centres.
The coordinates and velocities of the EPN tracking sites are available with an accuracy of a cm or better in the different realizations of the ITRS and ETRS89. In addition, regularly updated coordinates using the latest tracking data as well as coordinates for recent sites not yet included in the ITRS are also given.
By stacking the weekly EPN solutions (available since the start of the EPN until today),
precise station coordinates/velocities, as well as information on the non-linear behaviour of the coordinates
and their noise type is obtained.
The raw and cleaned coordinate times series show how the site coordinates change with time.
Within the routine analysis of a network of ground-based GPS receivers, such as the EPN, the tropospheric parameters are a by-product of the parameter estimation. The EPN makes available the tropospheric zenith path delays at all of its stations based on the estimates of all its Local Analysis Centres.