PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-23:57:50
G08     285.8          23.3                8.6 +/-    1.50      17.4 +/-    1.50  0.080 / 0.090
G10     21.4           62.9                5.2 +/-    1.34       5.8 +/-    1.34  0.120 / 0.130
G14     235.5          50.8               10.4 +/-    2.00      13.0 +/-    2.00  0.090 / 0.100
G18     317.5          15.7                4.7 +/-    2.06      11.5 +/-    2.06  0.060 / 0.090
G20     73.4           48.9                7.5 +/-    0.69       9.6 +/-    0.69  0.100 / 0.190
G21     149.4          34.5                7.8 +/-    0.78      12.5 +/-    0.78  0.180 / 0.160
G24     49.4           20.9                6.6 +/-    1.88      14.3 +/-    1.88  0.030 / 0.020
G27     249.3          28.5                8.6 +/-    1.85      15.6 +/-    1.85  0.030 / 0.020
G31     182.1          12.2                8.3 +/-    2.44      22.1 +/-    2.44  0.060 / 0.110
G32     263.1          73.4                8.0 +/-    0.47       8.3 +/-    0.47  0.050 / 0.110