PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/17-20:13:00
G01     321.0          11.4               -0.9 +/-   33.49      -2.5 +/-   33.49  0.100 / 0.260
G08     262.4          17.0                9.2 +/-    1.70      21.8 +/-    1.70  0.240 / 0.290
G10     67.3           56.6                7.1 +/-    0.31       8.3 +/-    0.31  0.230 / 0.420
G11     308.6          19.9                9.3 +/-    1.38      20.5 +/-    1.38  0.200 / 0.540
G14     274.5          68.2                8.4 +/-    1.07       8.9 +/-    1.07  0.050 / 0.050
G20     98.3           34.5                7.6 +/-    0.98      12.1 +/-    0.98  0.040 / 0.060
G21     154.7          10.8                9.7 +/-    4.76      26.7 +/-    4.76  0.140 / 0.310
G27     231.4          14.4                9.5 +/-    0.76      24.1 +/-    0.76  0.140 / 0.300
G31     179.3          31.8               10.3 +/-    3.21      17.4 +/-    3.21  0.140 / 0.370
G32     348.1          72.7                8.2 +/-    0.70       8.6 +/-    0.70  0.140 / 0.400