Planar trend model coefficients

Planar trend model coefficients for the representation of the midlatitude ionosphere, estimated in the least square sense for 2011 using JPL-GIMTEC every two hours and UHR-GIMTEC at every hour. Dataset contains coefficients for 48 different midlatitude regions. Each mat file contains estimated model coefficients at a specific local time as indicated in the file name. The table in the document lists geographic and geomagnetic coordinates of each region considered in the study.用于表征中纬度电离层的平面趋势模型系数，于2011年采用每两小时更新的JPL-GIMTEC数据与每小时更新的UHR-GIMTEC数据，以最小二乘准则估计得到。本数据集涵盖48个不同中纬度区域对应的模型系数。每个MAT文件存储特定地方时下的估计模型系数，文件名中已标注对应的地方时。本文档中的表格列出了本研究涉及的所有区域的地理坐标与地磁坐标。