Dataset containing mean, maximum, minimum and standard deviation values for total, direct and difusse photosynthetically active radiation expresed as photon irradiance. Each value is a summary 60 consecutive readings acquired once every second.
A data frame with 24479 rows and 9 variables. variables.
The variables are as follows:
time_EEST POSIXct Local time according to EET coordinates.
ppfd_tot_mean numeric (mol m-2 m-2)
ppfd_tot_min numeric (mol m-2 m-2)
ppfd_tot_max numeric (mol m-2 m-2)
ppfd_tot_sd numeric (mol m-2 m-2)
ppfd_diff_mean numeric (mol m-2 m-2)
ppfd_diff_min numeric (mol m-2 m-2)
ppfd_diff_max numeric (mol m-2 m-2)
ppfd_diff_sd numeric (mol m-2 m-2)
Instrument used: Delta-T BF5 "quantum sensor" , mounted on tripod at approximately 2 m height. Data collected with a Campbell Scientific CR6 datalogger, using analogue outputs from the sensor. 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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