Contributing agency

Station summaryCHTG

  • More informations on each symbol.
  • GPS
    Tide Gauge
IGS-type acronym : CHTG
Latitude : 49.65129852
Longitude : -1.63563001
Installed date : 2015-02-20
Decommissioned date :
Country : FRANCE
Station status : active (green)
Domes Nr.: 19622M001
Station operator: (LIENSs - OASU) - LIENSs - OASU
IGS-like station form :

GPS position times seriesCHTG


(Reference epoch: )

Offsets (mm)

MMaterial change or malfunction
RFReference Frame change
NANot available
Position discontinuity
Velocity discontinuity
Vertical component
East component
North Component

Data available at SONELCHTG

Quality plots on RINEX filesCHTG

Quality plots on RINEX files of CHTG Quality plots on RINEX files of CHTG Royal Observatory of Belgium

Plots generated using software developed with the EPN team at ROB
Observations & tracking performance Satellite tracking

informations (this operation may take 20 to 45s)

The satellite tracking graph has been calculated for all stations for the first day of each month. If you wish to have a graph for another date, choose the 'Calculate a specific date' option.

Comparison with satellite altimetry data

Co-located instrumentsCHTG

Photo albumCHTG


If you have a relevant reference to suggest, please send-us an e-mail :
  • puce Dodet, Bertin et al., 2019. Characterization of Sea-level Variations Along the Metropolitan Coasts of France: Waves, Tides, Storm Surges and Long-term Changes. Get this reference BibTeX of the reference

Log bookCHTG

2021-09-13 (23/05/2022)

Intervention by the SHOM to change the acquisition central of the tide gauge. Before it was an Elta system, now it is a Campbell. Also, installation of the meteorological sensor and the camera

2020-11-27 (27/11/2020)

Following message 2020-11-03, T.Donal explains that the increase in maritime traffic and ship mooring nearby CHTG GNSS station creates more masks that affect the GNSS signal reception. E.Poirier (ULR)

2020-11-03 (03/11/2020)

M.Gravelle and T.Donal spotted anomalies in CHTG E,N,U series. This may be due to a high number of cycle slips since may-2018 especially in the norhtern sector of the antenna. Investigation is started to find out the reason for this cycle slips. Thre could be an obstruction in the North of the antenna. E.Poirier (ULR)

[RGPmail] - 2018-11-26 (12/12/2018)

Dataflow for the CHTG station has restarted since session 2018-226t. Missing data are definitely lost.

[EUREFmail-9616] - 2018-11-05 (08/11/2018)

Firmware is updated to version 3.6.13 Feb,12,2018, and the sitelog is updated

[RGPmail] - 2016-04-05 (05/04/2016)

Due to a technical problem, the CHTG station is unavailable. The delay to recover a normal trafic is unknown.