The package is located here: https://github.com/mvdh7/CO2System.jl.
According to the installation instructions, I should install the CO2System package as below:
pkg> add https://github.com/mvdh7/CO2System.jl
My question is how do I change to the pkg mode? I tried the below and it did not work:
using Pkg
Pkg.add("CO2System")
Many thanks.