These are preliminary Walter-Lieth diagrams from the downscaled and non-biase-corrected climate data supplied by Francois Engelbrecth (CSIR).
Sorted out the issue with temperature (it was in Kelvin, not a decimal saving *10)
## Loading required namespace: ncdf4
loc <- matrix(c(28.2768340000,-25.753401),ncol=2)
make.figs(loc, "Pretoria (CSIR)")
loc <- matrix(c(29.823937,-31.434407),ncol=2)
make.figs(loc, "Pondoland Site")