Time stamp in UTC month 1..12 2 day of the month 1..31 28 UTC hours 0..23 23 minutes 45 Water level report. This is DRAFT/PROPOSED message format and should not be considered any sort of standard. The main goal is to illustrated the Tide Aware ENC and the AIS XML engine. This is based on discussions with the NOAA PORTS group. 2nd generation water level message prototype http://opendap.co-ops.nos.noaa.gov/axis/ http://vislab-ccom.unh.edu/~schwehr/software/noaadata/ais-messages/waterlevel.html http://http://vislab-ccom.unh.edu/~schwehr/ais/waterlevel/ http://co-ops.nos.noaa.gov/corms.html Designated Area Code 366 Functional Identifier 63 Time the measurement represents Character identifier of the station. Usually a number. station name should be taken from an external lookup table based on stationid @@@@@@@ A234567 Water level in centimeters cm -32768 -97 What reference datum applies to the value Tries to match the first 2 along with the St. Lawrence Seaway. 2 is for Water Level Type of 1?!? Need a good reference to the definition of each MLLW IGLD-85 WaterDepth STND MHW MSL NGVD NAVD WGS-84 LAT Pool Gauge Reserved for future use Unknown/Unavailable 31 0 Standard deviation of 1 second samples used to compute the water level height. FIX: is this the correct description of sigma? 127 cm 97 How the water level was derived 0 No data Realtime sensor data Raw realtime sensor data - no validation Predicted water level - tidal data generated by using harmonic analysis Forecast water level - tidal data generated by use of a hydrodynamic model Reserved Reserved Reserved 2