PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-18:57:50
G05     48.1           19.2                8.6 +/-    1.72      19.3 +/-    1.72  0.040 / 0.090
G10     235.4          13.4                9.9 +/-    3.46      25.5 +/-    3.46  0.060 / 0.100
G13     75.7           35.3               10.9 +/-    0.88      17.2 +/-    0.88  0.050 / 0.100
G15     126.5          51.9               11.1 +/-    0.28      13.6 +/-    0.28  0.100 / 0.130
G16     314.4          12.4                7.8 +/-    2.66      20.5 +/-    2.66  0.030 / 0.040
G20     248.0          37.3               11.0 +/-    1.37      16.8 +/-    1.37  0.030 / 0.040
G21     312.3          45.6                9.8 +/-    0.86      13.0 +/-    0.86  0.150 / 0.340
G25     200.4          12.5               10.6 +/-    2.63      27.9 +/-    2.63  0.130 / 0.360
G26     288.3          20.2                6.8 +/-    1.85      14.9 +/-    1.85  0.150 / 0.420
G29     152.1          74.1               10.9 +/-    0.53      11.3 +/-    0.53  0.130 / 0.340