Nothing
rnl <-
function(Tmax,Tmin,sol_rad,vap_pres,extraT,tal) {
rnl <- 4.903e-09*(((Tmax+273.16)^4+(Tmin+273.16)^4)/2)*(0.34-0.14*sqrt(vap_pres))*(1.35*sol_rad/(extraT*tal)-0.35)
rnl
}
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