Data



Data Notes



Extracted from Database

11 Mar 2019

SIROS

Station Information

Station ID: 1234
Latitude: 37.439969
Longitude: 24.945808
Coastline code: 290
Station code: 81
Country: GREECE
Time span of data: 1969 – 2017
Completeness (%): 86
Date of last update: 19 Sep 2018

Green Arrow: Current Station
Yellow Marker: Neighbouring RLR Station
Red Marker: Neighbouring Metric Station

Please note: In many cases, the station position in our database is accurate to only one minute. Thus, the tide gauge may not appear to be on the coast.

Tide Gauge Data

Plot of monthly mean sea level data at SIROS.

Link to larger image of monthly data plot.
Download monthly mean sea level data.

Plot of annual mean sea level data at SIROS.

Link to larger image of annual data plot.
Download annual mean sea level data.

Download metric sea level data. Use only with extreme caution.
NOTE: If some of the data are red in the plots above, the 'flag for attention' is set. Please see the documentation below.

Additional Data Sources (guide to additional data sources)

Nearby GNSS Stations from SONEL: SYRO
Nearby Real Time Stations from VLIZ: syro

Station Documentation

Link to RLR information.

Documentation - date unknown

1969,1971-72,1974-79 Data from readings of tide pole

Documentation added 1997-03-11

The contributing authority advises that anomalous values
are the result of met. influences

Documentation added 2006-11-28

Whole dataset flagged due to unresolved datum query.

Documentation added 2011-03-08

When the method of recording data for this station was changed from measuring
downwards to the more conventional method of measuring upwards the revised
datum value did not look correct. Although the authority has been contacted
several times the Hellenic Navy still quote the same datum value.
Because of this the station remains flagged and data January 2003 onwards when
the change occurred has been demoted to 'Metric' status.
Investigation was also carried out to see if the gap in the RLR record between
January 1984-December 1998 could be converted to RLR status. However,
although nothing appears obvious within the data, previous unresolved datum
issues still exist so the data remains 'Metric'

Documentation added 2011-07-13

Following further information from the Hellenic Navy Oceanography Service an
adjustment was made to the datum of data. The station flag has now been removed
and the total dataset reinstated as RLR.

Data Authority

Hellenic Navy Hydrographic Service
Geographic Policy and International Relations Office
TGN 1040
Athens