PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/20-20:12:40
G08     313.7          17.2                9.6 +/-    1.49      22.7 +/-    1.49  0.060 / 0.090
G10     320.3          58.0               10.0 +/-    0.70      11.6 +/-    0.70  0.060 / 0.090
G14     214.8          24.4               13.6 +/-    2.47      26.9 +/-    2.47  0.040 / 0.040
G15     46.0           19.3                7.7 +/-    0.90      17.3 +/-    0.90  0.050 / 0.040
G20     24.3           62.8                9.2 +/-    0.57      10.2 +/-    0.57  0.130 / 0.280
G21     126.6          62.4               12.0 +/-    0.67      13.3 +/-    0.67  0.110 / 0.320
G24     78.2           28.8                9.1 +/-    0.49      16.4 +/-    0.49  0.090 / 0.190
G27     285.5          37.1               10.1 +/-    1.25      15.4 +/-    1.25  0.090 / 0.180
G32     217.8          46.2               11.8 +/-    2.09      15.6 +/-    2.09  0.290 / 0.330