Description of the data files
-----------------------------

1.	File "Location.csv"

1.1.	Columns of table "Location"

LocationName                    Unique identifier of the location
Y_LV03                          Easting [m] (Swiss coordinates, CH1903/LV03)
X_LV03                          Northing [m] (Swiss coordinates, CH1903/LV03)
h                               Height [m] (Swiss coordinates, LN02)
LON_WGS84                       Longitude WGS84 [degree]
LAT_WGS84                       Latitude WGS84 [degree]
H_WGS84                         Ellipsoidal height WGS84 [m]
Canton                          Canton of Switzerland
SiteType                        Type of location [Tilting_pole, Antenna, Pole, AQM_SITE, Building, Mast, TALL_TOWER, Fence, House_wall]

1.2.	Notes

- The parameter "h" indicates the height of the topography at the X_LV03/Y_LV03 coordinates. The LP8 sensor height is derived by summing Location.h and Deployment.HeightAboveGround.
- The accuracy of the coordinates is about +- 5-10 m.


2	File "Deployment.csv"

2.1.	Columns of table "Deployment"
SensorUnit_ID                   Unique identifier of the sensor unit. LP8: 1010..1334.
LocationName                    Unique identifier of the location (Location information in "Locations.csv")
Date_UTC_from                   Date [UTC] the sensor is placed at the location. Format: yyyy-mm-ddTHH:MM:SSZ
Date_UTC_to                     Date [UTC] the sensor is removed from the location. Format: yyyy-mm-ddTHH:MM:SSZ
HeightAboveGround               Sensor's height above ground [m]


3	Files "LP8_LocationName_SensorUnit_ID_yyyymmddTHHMMSSZ_yyyymmddTHHMMSSZ.csv" 

One file per each Deployment in "Deployment.csv"

3.1.	Columns of table "LP8_LocationName_SensorUnit_ID_yyyymmddTHHMMSSZ_yyyymmddTHHMMSSZ"

Date                       Format: yyyy-mm-ddTHH:MM:SSZ. Refers to the beginning of the 10 minute time interval.
T                          temperature [degree Celsius] (10 minute average)
RH                         relative humidity [%] (10 minute average)
H2O		           Molar fraction of water computed using RH, T and pressure interpolated from the METEOSWISS measurement network
CO2			   CO2 molar concentration [ppm] in wet air (10 minute average) as measured by the Senseair LP8 NDIR sensor.

3.2 Notes
The CO2 data is produced according to the method described by Mller et al. 2020 "Integration and calibration of non-dispersive infrared (NDIR) CO2 low-cost sensors and their operation in a sensor network covering Switzerland" (DOI:  10.5194/amt-13-3815-2020). 
A measurement accuracy of approximately 10 ppm can be expected. 
Notice that:
1) A sensor unit could have been in different places at different times.
2) Multiple sensors could have been installed in the same location, either simultaneously or sequentially. This is found in "Deployments.csv".
