Resolution No.9 (1967): Automatically constructing ionospheric current charts

The IAGA recommends an investigation of the feasibility of automatically constructing ionospheric current charts for any U.T. epoch, using mean hourly values from a well distributed group of magnetic observatories. After feasibility is proven the IAGA recommends that arrangements be made with a suitable agency to construct and publish such charts for 3 or 4 epochs each Greenwich day, as a routine procedure.