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Ionosphere layer is an important medium in communication system. At this layer where the total electron content exist because of ionization by the Sun's extreme ultraviolet radiation, meanwhile the night side ionosphere electron content is reduced by chemical recombination. Maximum Total Electron Content (TEC) was detected at 0500 Local Time Clock (LTC) and will decrease gradually and reached its minimum at 2200 LTC. TEC during the day is higher than at night. The ultraviolet (UV) radiation from the sun ionizes fractions of the neutral atmosphere and forms the ionosphere. The elevation angle of satellite will also influence the TEC value. The higher elevation angle, the value of vertical TEC will also increase. The data from GPS Stations in RINEX format is supplied by Department of Survey and Mapping Malaysia (JUPEM). The data is taken from two different stations located at GPS Station Arau, Perlis and GPS Station Universiti Teknologi Malaysia Skudai, Johor.