CONTENTS

Policy on Intellectual Property Right (IPR)
 1     Introduction
 2     NeQuick2 electron density model
        2.1     Background
        2.2     The NeQuick electron density model
                  2.2.1     The Epstein function
                  2.2.2     Constants used
                  2.2.3     Auxiliary parameters
                  2.2.4     Model parameters
        2.3     Electron density computation
                  2.3.1     The bottomside electron density
                  2.3.2     The topside electron density
                  2.3.3     Auxiliary routines
        2.4     TEC calculation
                  2.4.1     Vertical TEC calculation
                  2.4.2     Slant TEC calculation
        2.5     Changes introduced in NeQuick2
                  2.5.1     Bottomside modification
                  2.5.2     Topside modification
                  2.5.3     Modip map
                  2.5.4     Other package and source code modifications
        2.6     References
 3     Vertical total electron content maps