Dataset containing mean, maximum, minimum and standard deviation values for photosynthetically active radiaition expresed as photon irradiance. Each value is a summary 60 consecutive readings acquired once every second.
A data frame with 24479 rows and 5 variables.
The variables are as follows:
time_EEST POSIXct Local time according to EET coordinates.
ppfd_mean numeric (mol m-2 m-2)
ppfd_min numeric (mol m-2 m-2)
ppfd_max numeric (mol m-2 m-2)
ppfd_sd numeric (mol m-2 m-2)
Instrument used: LI-COR LI-190 quantum sensor, mounted on tripod at approximately 2 m height. Data collected with a Campbell Scientific CR6 datalogger. Sensor connected through a LI-COR millivolt adaptor (604 ohm). Wavelength sensitivity range of the quantum sensor is 400 nm to 700 nm. Location: Viikki campus of the University of Helsinki. Coordinates: 60.226803 N, 25.019205 E.
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