PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-15:43:00
G05     52.3           11.0                6.9 +/-    1.75      18.7 +/-    1.75  0.040 / 0.040
G10     243.1          20.5                9.3 +/-    1.33      20.2 +/-    1.33  0.040 / 0.040
G13     62.9           33.8                8.0 +/-    0.48      13.0 +/-    0.48  0.130 / 0.660
G15     109.9          57.5                9.5 +/-    0.56      11.1 +/-    0.56  0.130 / 0.520
G16     305.5          14.6                4.9 +/-    3.87      12.2 +/-    3.87  0.170 / 0.300
G20     258.5          44.6                8.0 +/-    0.97      10.9 +/-    0.97  0.200 / 0.280
G21     325.9          55.3                7.2 +/-    1.02       8.6 +/-    1.02  0.040 / 0.060
G26     278.7          18.2                6.8 +/-    1.35      15.6 +/-    1.35  0.040 / 0.060
G29     160.3          59.8               11.3 +/-    0.57      12.9 +/-    0.57  0.070 / 0.120