PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/05-22:28:10
G13     50.7           27.2                6.2 +/-    2.73      11.5 +/-    2.73  0.030 / 0.040
G15     80.9           56.9                9.9 +/-    0.92      11.6 +/-    0.92  0.040 / 0.050
G16     293.3          15.5                6.7 +/-    1.48      16.5 +/-    1.48  0.090 / 0.210
G20     273.8          52.4               10.6 +/-    2.66      13.0 +/-    2.66  0.160 / 0.150
G21     336.7          61.3                9.1 +/-    0.87      10.2 +/-    0.87  0.030 / 0.030
G26     265.8          14.4                9.1 +/-    2.71      22.9 +/-    2.71  0.030 / 0.040
G29     164.1          46.8                9.4 +/-    0.49      12.3 +/-    0.49  0.100 / 0.290