The exact column name as it appeared in the raw file before any cleaning.The variable’s data type (text, numeric, timestamp, etc.) after cleaning.The standardized, machine‑friendly name produced following data best practices, for e.g., using the CSV Studio’s header cleaning function. Used in the final dataset.A human‑readable name. Helps non‑technical users understand the variable.The physical units associated with the variable (e.g., m, PSU, °C).The description supplied by the original data provider explaining what the variable represents.Standardized scientific term selected from an authoritative vocabulary (e.g., BODC, CF). Ensures consistent meaning across datasets.Link to standardized scientific term and definition.Any notes about how the variable was processed or derived.Extracted from the header or assigned manually.The medium from which the measurement was taken (e.g., water, air, sediment). Extracted from the header or assigned manually.Whether the value is a direct measurement or a calculated value.Any statistical operation applied to the variable (e.g., mean, max, min). “none” if no statistic was applied. Date_Timenumericdate_and_timeDate and TimeUTCDate-Time in ISO formatUT_ISO8601http://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/actualnone Pressure_20812849_mbarnumericair_pressureAir PressurembarPressure (measured variable) exerted by the atmospherewind_speed_of_gusthttp://vocab.nerc.ac.uk/collection/P01/current/CAPHZZ01/Airactualnone numericair_pressure_result_value_qualifierRVQ codes explain missing, unusual, or potentially erroneous data vales. The codes can be found hereAiractualnone PAR_21181960_uEnumericphotosynthetically_active_radiationPhotosynthetically Active Radiation (Air)uEPhotosynthetically active radiation (PAR) is a measure of light. It is the intensity of the part of sunlight that plants can use to support new growth, and also the wavelengths of light that our eyes are sensitive to. It is measured on a small white disc that records the sum of light falling directly from the sun plus the light scattered by the sky and clouds. It is reported in a unit called a micro-Einstein.SurfVPARhttps://vocab.nerc.ac.uk/collection/P01/current/IRRDSV01/uE means measured in photons, not energy.Airactualnone numericphotosynthetically_active_radiation_result_value_qualifierRVQ codes explain missing, unusual, or potentially erroneous data vales. The codes can be found hereAiractualnone Rain_21201869_mmnumericprecipPrecipitationmmRain is reported in millimetres accumulated every 15 minutes in a gauge set about 1 m above the ground. Rain falling into a 6-inch diameter funnel drips onto one of a pair of “buckets”, mounted on a teeter-totter. When one bucket is filled, the teeter-totter flips, the first bucket is emptied and rain then drips into the other “bucket” until it is filled, and so on. Each flip is equal to 0.2 mm of rain.Preciphttp://vocab.nerc.ac.uk/collection/P01/current/CPRPRG01/Airactualnone numericprecip_result_value_qualifierRVQ codes explain missing, unusual, or potentially erroneous data vales. The codes can be found hereAiractualnone Temperature_21238286_deg_Cnumericair_temperatureAir Temperaturedeg_CWe report temperature in the shade, in Centigrade degrees. It is measured using an electronic thermometer shielded from direct sunlight and mounted inside an enclosure with louvered walls to allow free air flow past the sensor.air_temperaturehttp://vocab.nerc.ac.uk/collection/P07/current/CFSN0023/Airactualnone numericair_temperature_result_value_qualifierRVQ codes explain missing, unusual, or potentially erroneous data vales. The codes can be found hereAiractualnone RH_21238286_%numericrelative_humidityHumidity%Relative humidity is the amount of water vapour in the air reported as a percentage of the amount that would saturate it at the air temperature. Warmer air can hold more water vapour than cooler air.relative_humidityhttps://vocab.nerc.ac.uk/collection/P07/current/CFSN0413/Airactualnone numericrelative_humidity_result_value_qualifierRVQ codes explain missing, unusual, or potentially erroneous data vales. The codes can be found hereAiractualnone Wind Speed_21292310_km/hnumericwind_speedWind Speedkm/hWind speed is measured using a spinning anemometer mounted on the wind vane at the top of the tower, about 3 m above the ground. We report the average speed for every 15 minute period, in kilometres per hour. Wind speeds reported at St Laurent Li Taan Aen Staansyoon indicate speeds that would be felt nearby on the lake only when the wind blows from SSW through W to NNW. The anemometer is sheltered from the full force of the wind by trees in other directions. Wind speeds are measured 3 m above the ground surface. Environment Canada and Manitoba Department of Agriculture weather stations report faster speeds because they are recorded on higher, 10 m towers.wind_speedhttp://vocab.nerc.ac.uk/collection/P07/current/CFSN0038/Airactualnone numericwind_speed_result_value_qualifierRVQ codes explain missing, unusual, or potentially erroneous data vales. The codes can be found hereAiractualnone Gust Speed_21292310_km/hnumericwind_speed_of_gustWind Gustkm/hWind gusts are the highest wind speed recorded in each 15 minute period, and are also recorded in kilometres per hour. Wind gust speeds reported at St Laurent Li Taan Aen Staansyoon indicate speeds that would be felt nearby on the lake only when the wind blows from SSW through W to NNW. The anemometer is sheltered from the full force of the wind by trees in other directions. Wind gust speeds are measured 3 m above the ground surface. Environment Canada and Manitoba Department of Agriculture weather stations report faster speeds because they are recorded on higher, 10 m towers.wind_speed_of_gusthttp://vocab.nerc.ac.uk/collection/P07/current/CFSN0039/Airactualnone numericwind_speed_of_gust_result_value_qualifierRVQ codes explain missing, unusual, or potentially erroneous data vales. The codes can be found hereAiractualnone Wind Direction_21292310_degnumericwind_from_directionWind DirectiondegWind direction is measured using a wind vane mounted at the top of the tower. As we do with wind speed, we report the average direction for every 15 minutes, in compass degrees from true north. It is then converted to a direction.wind_from_directionhttp://vocab.nerc.ac.uk/collection/P07/current/CFSN0036/Airactualnone numericwind_from_direction_result_value_qualifierRVQ codes explain missing, unusual, or potentially erroneous data vales. The codes can be found hereAiractualnone Backup_Batts_21296930_Vnumericbattery_outputVBattery voltageAiractualnone