calculate_rpot: Calculate Potential Radiation
In grahamstewart12/tidyflux:

Calculate the potential radiation from solar elevation and extraterrestrial solar radiation. REddyProc name: fCalcPotRadiation.

1	calculate_rpot(timestamp, lat, long, tz, solar_time = TRUE)

`lat`	Latitude in decimal degrees.
`long`	Longitude in decimal degrees.
`tz`	Time zone (in hours).
`solar_time`	Should hour (given in local winter time) be corrected for latitude to solar time where noon is exactly at 12:00 (default)? Set to `FALSE` to directly use local winter time.
`doy`	A numeric vector with day of the year, same length as hour or length 1.
`hour`	A numeric vector with time as decimal hour of local time zone.