Introduction & Maps
Daily data
All EPN stations upload daily (24 hour) RINEX
files to two EPN data centres
(the primary and secondary data centre) from where they flow to the
two EPN Regional data centres
following a well-defined data flow scheme indicated in the
Guidelines for EPN Stations and Operational Centres.
In order to minimize file size, the RINEX data are
Hatanaka compressed
before being uploaded. One week after the observation date, all daily RINEX
data are copied to the EPN data archive
at ROB (EPN CB). This archive also contains the historical data of the EPN
stations from the period before they were integrated in the EPN.
Once a week, the EPN Central Bureau informs the EUREF community (through the
EUREF mailing list) about missing
data files and meta-data inconsistencies
(sample email).
Hourly data
In addition to the daily data uploads,
EPN stations use the same data flow scheme to submit hourly
RINEX data. The hourly EPN data are mainly used for the determination of zenith
total delays in near-real time aiming at improving numerical weather predictions
(E-GVAP).
For these applications it is crucial that the hourly RINEX observation files are
made available to the customer with
latencies
below 10 minutes.
The EPN CB distributes monthly (through the
EUREF mailing list) an overview of
the histogram of the minimal latencies of all the EPN stations
(sample email).
Availability of daily RINEX data (last 4 weeks): 90% < station , 80% < station < 90%, station < 80%.
Hourly RINEX data submitted with latency below 10 min. (last 4 weeks): 90% < station , 80% < station < 90%, station < 80%.