Ionospheric data from GPS and IRI-2016 model

This was collected by a SCINDA GPS receiver installed at Helwan University, Cairo in Egypt which is near the northern crest of the Equatorial Ionisation Anomaly. The receiver was installed by the SCINDA project during the implementation of the International Heliophysical Year program in 2009. The recording of data started in July 2009 up to August 2017 before the receiver become faulty. The actual raw files were preprocessed to textfiles for each year named "Myfiletec'year'".
There are 9 text files each with 5 columns of data in the order of DOY, hh, mm, TEC, SI representing doy of the year, hour, minute, total electron content, and scintillation index respectively.

The IRI data was got from the Community Coordinated Modeling Center (https://ccmc.gsfc.nasa.gov/models/modelinfo.php?model=IRI) by running year requests from 20009 to 2017. The text files contained the parameters in the following order of year, month, day, hour, minute, second, geographical positions (longitude & latitude), height, electron density, ,TEC, and peak density (NmF2).

本数据集由安装于埃及开罗赫尔万大学（Helwan University）的SCINDA GPS接收机采集所得，该观测站点位于赤道电离层异常（Equatorial Ionisation Anomaly）北脊附近。该接收机由SCINDA项目于2009年国际太阳物理年（International Heliophysical Year）计划实施期间架设完成。数据采集工作始于2009年7月，持续至2017年8月，直至接收机发生故障。原始数据文件已被预处理为按年份命名的文本文件，命名格式为"Myfiletec'year'"。

本次数据集共包含9个文本文件，每个文件均包含5列数据，列顺序依次为年积日（DOY, Day of Year）、小时（hh）、分钟（mm）、总电子含量（TEC, Total Electron Content）以及闪烁指数（SI, Scintillation Index）。

此外，本数据集附带的IRI数据通过社区协调建模中心（CCMC, Community Coordinated Modeling Center，官网链接：https://ccmc.gsfc.nasa.gov/models/modelinfo.php?model=IRI）获取，通过发起2009至2017年的年度请求运行模型生成。该数据文本文件包含的参数顺序依次为：年份、月份、日期、小时、分钟、秒、地理位置（经度与纬度）、高度、电子密度、总电子含量（TEC）以及F2层峰值电子密度（NmF2, Peak Density）。