The data in the file is organized in a space-delimited format. The resolution of the Global Grid is 2.5 x 2.5 degrees, whereas the Regional Grid has a resolution of 0.1 x 0.1 degrees.

The figure illustrates the method for calculating values of positive and negative anomalies.Negative anomalies in TEC values are represented as absolute values to simplify the visualization, as TEC values cannot be negative.