SONEL data server

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  *                                                                   *
  * The SONEL data server is under construction. We are in a pilot phase. *
  * Data structure and formats may change during this phase. Please,  *
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  *                                                                   *
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DATA DESCRIPTION
================

Different types of tide gauge data are available in this server:
 - Raw hourly values, latency 1 week, no quality control
 - Quality controlled hourly values, latency 2 months
 - Mean sea level values (daily, monthly, annual)


Tide gauge data is organized as follows:

  HAUT_10---|--RECENT-|--fAJACC_raw.slv   Ajaccio raw 10 min. sampling
            |         |                   data since last quality control
            |         |--fMARSE_raw.slv   Same for Marseille...
            |         |--...
            |
            |--TOTAL--|--fAJACC.slv       Complete 10 min. data file for Ajaccio
            |         |                   (No rigorous quality control performed)
            |         |--fMARSE.slv
            |         |--...
            |
  HAUT_HOR--|--VALID--|--hAJACC2001.slv   Ajaccio Quality controlled
            |         |                   hourly data for year 2001 
            |         |--hAJACC2002.slv               ... year 2002
            |         |--hMARSE2001.slv
            |         |--hMARSE2002.slv
            |         |--...
            |
            |--TOTAL--|--hAJACC.slv       Complete quality controlled
            |         |                   hourly data file for Ajaccio
            |         |--hMARSE.slv
            |         |--...
            |
  NIVX_MOY--|--AJACC2005.nm     Mean sea level values (daily,monthly,annual)
            |--AJACC2006.nm     for station AJACC for year 2005, 2006
            |--...              (in SHOM format)
            |
            |
  docFM-----|--FM_AJACC20060313.pdf       SHOM documentation file, the
            |--FM_BREST20060313.pdf       file name indicates the update.
            |--...


  Directory  RECENT/ contains raw data that is pending for quality control,
                     the directory is updated every 15 days.
  Directory  VALID/  contains quality controlled data for previouss years,
                     updated every 2 months.
  Directory  TOTAL/  contains all of the quality controlled data available,
                     updated every 2 months. 


DATA FORMATS
============

  UNITS:
  ------
   Hourly and 10 min. sea level height values are provided in TU+0
   Heights are expressed in centimeters for hourly values (IHO standard),
                         in meters for 10 min. values or mean sea levels

  FILE NAMINGS:
  -------------
   sCCCCC[YYYY][WW].eee      Note: [] means optional

   s : prefix 'f' for 10 min. values
              'h' for hourly values
              'd' for daily values
              'm' for monthly values
              'y' for yearly values
   CCCCC : SONEL station/site identification code,
           see file site_codes.txt
   YYYY :  year of data
   WW :    week of data
   eee :   extension 'slv' for sea level values.
                     'bar' for pressure values

  FILE CONTENTS:
  --------------
   Hourly sea level data files are provided in SHOM/IHO format.
   The format is as follows :
   
   Each line contains 27 values
    - 3 fields of 4 integer characters :
      - the year 
      - an internal SHOM harbor code
      - the day of year

    - 24 fields of 4 integer characters :
      - sea level heights, from 0h to 23h TU+0, in centimeters
        Note: 9999 means no data or bad value (as it is the
        case for the valeur 99.999 in the 10 min. data).