PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-17:12:40
G10     251.5          26.8               11.6 +/-    1.55      21.7 +/-    1.55  0.040 / 0.070
G13     53.4           30.4               11.4 +/-    0.76      19.8 +/-    0.76  0.050 / 0.060
G15     82.2           56.4               12.5 +/-    0.73      14.7 +/-    0.73  0.050 / 0.050
G16     300.1          13.3                7.4 +/-    2.62      19.1 +/-    2.62  0.050 / 0.060
G18     272.5          58.0               10.8 +/-    1.02      12.5 +/-    1.02  0.100 / 0.270
G20     42.3           49.2                9.5 +/-    0.97      12.1 +/-    0.97  0.110 / 0.290
G21     341.7          63.9               10.0 +/-    0.43      11.0 +/-    0.43  0.110 / 0.390
G26     270.4          14.8                9.7 +/-    2.49      24.2 +/-    2.49  0.120 / 0.370
G29     162.5          42.9               15.3 +/-    1.07      21.2 +/-    1.07  0.060 / 0.140