PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-15:42:40
G05     52.3           11.0                6.2 +/-    1.95      17.1 +/-    1.95  0.080 / 0.400
G10     243.1          20.5                9.1 +/-    4.09      19.8 +/-    4.09  0.090 / 0.320
G13     62.9           33.8                8.0 +/-    1.32      12.9 +/-    1.32  0.040 / 0.050
G15     109.9          57.5                9.3 +/-    0.48      10.8 +/-    0.48  0.040 / 0.050
G16     305.5          14.6                2.5 +/-    2.79       6.4 +/-    2.79  0.040 / 0.030
G20     258.5          44.6                9.3 +/-    3.62      12.6 +/-    3.62  0.040 / 0.030
G21     325.9          55.3                7.8 +/-    0.77       9.3 +/-    0.77  0.320 / 0.300
G26     278.7          18.2                7.6 +/-    1.40      17.4 +/-    1.40  0.150 / 0.200
G29     160.3          59.8               10.3 +/-    0.48      11.8 +/-    0.48  0.150 / 0.190