Name of the vessel.

Alphanumerical code or identifier (ID) that is assigned to a vessel.

Year (YYYY), month (MM), and day (DD) along with hour(s) (hh), minute(s) (mm), and second(s) (ss) formatted to ISO8601 (YYYY-MM-DD hh:mm:ss).

Measurement of location either north (positive value) or south (negative value) of the equator in units of degrees and tenths.

Measurement of location either east (positive value) or west (negative value) of the prime meridian in units of degrees and tenths.

World Meteorological Organization (WMO) coding system (FM 13-XIC Ext. Ship) obtained from the Environment and Climate Change Canada's Manual of Marine Weather Observations (MANMAR) for Automated Voluntary Observing Ship (AVOS) program.

Officers observing weather conditions are encouraged file reports for SPREP and STORM conditions to assist in affirming weather forecasts. SPREP indicates a special weather report, where significant weather changes have taken place. A STORM report indicates that storm conditions are occurring, whether forecasted or not, and a wind speed increase of 48 knots (kt) or more has occurred.

For more information on what criteria is required for SPREP reports, please refer to MANMAR manual.

World Meteorological Organization (WMO) coding system (FM 13-XIC Ext. Ship) obtained from the Environment and Climate Change Canada's Manual of Marine Weather Observations (MANMAR) for Automated Voluntary Observing Ship (AVOS) program.

ECCC code or indicator to differentiate between all observations taken automatically, identified by a value of 6, or whether manual observations were taken (e.g. cloudiness, visibility, etc.), identified by a value of 1.

Measurement of air temperature in units of degrees and tenths (°C).

Value of temperature required for air to be saturated with water vapour to reach 100% relative humidity in units of whole degrees Celsius (°C).

Measurement of sea water temperature at surface in units of degrees and tenths Celsius (°C).

Measurement of air pressure in units of hectoPascals and tenths (hPa).

Measurement of atmospheric pressure change over a three-hour period preceding the observation in units of hectoPascals and tenths (hPa).

World Meteorological Organization (WMO) coding system (FM 13-XIC Ext. Ship) obtained from the Environment and Climate Change Canada's Manual of Marine Weather Observations (MANMAR) for Automated Voluntary Observing Ship (AVOS) program.

Present tendency is a code that indicates the tendency of the pressure during a three hour before the time of observation. Please refer to the MANMAR manual on page 7-89 for further description of the numerical values.

World Meteorological Organization (WMO) coding system (FM 13-XIC Ext. Ship) obtained from the Environment and Climate Change Canada's Manual of Marine Weather Observations (MANMAR) for Automated Voluntary Observing Ship (AVOS) program.

The precipitation group indicator is always coded as 4, indicating the ship does not have equipment onboard to measure precipitation.

World Meteorological Organization (WMO) coding system (FM 13-XIC Ext. Ship) obtained from the Environment and Climate Change Canada's Manual of Marine Weather Observations (MANMAR) for Automated Voluntary Observing Ship (AVOS) program.

A wind speed indicator code of 4 indicates wind speed obtained from anemometer (knots). Please refer to page 3-18 for other code indicator descriptions.

Measurement of wind direction in units of tens of degrees (°).

Measurement of wind speed in knots (kts).