PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/29-20:28:10
G10     248.3          23.9               17.5 +/-    2.53      35.0 +/-    2.53  0.120 / 0.370
G13     57.4           32.8               17.3 +/-    1.47      28.6 +/-    1.47  0.140 / 0.380
G15     92.0           57.6               17.3 +/-    0.46      20.1 +/-    0.46  0.040 / 0.050
G18     265.5          54.6               16.4 +/-    0.85      19.7 +/-    0.85  0.040 / 0.050
G20     40.8           50.9               15.0 +/-    0.50      18.7 +/-    0.50  0.050 / 0.120
G21     332.5          59.7               17.1 +/-    0.98      19.5 +/-    0.98  0.050 / 0.120
G26     274.7          16.1               13.4 +/-    2.12      32.4 +/-    2.12  0.060 / 0.060
G29     161.8          48.2               20.4 +/-    1.09      26.3 +/-    1.09  0.050 / 0.050