PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/30-20:12:50
G01     119.5          17.0               12.1 +/-    1.81      28.6 +/-    1.81  0.030 / 0.030
G07     86.8           62.5               11.0 +/-    0.90      12.2 +/-    0.90  0.030 / 0.030
G08     44.9           31.1                8.4 +/-    1.04      14.3 +/-    1.04  0.090 / 0.290
G09     177.6          28.1               12.3 +/-    2.10      22.5 +/-    2.10  0.230 / 0.270
G11     106.1          40.1               12.4 +/-    0.65      18.0 +/-    0.65  0.100 / 0.070
G13     317.8          19.4                8.3 +/-    1.12      18.6 +/-    1.12  0.070 / 0.070
G17     200.5          24.6               13.0 +/-    3.17      25.6 +/-    3.17  0.080 / 0.140
G18     92.4           20.2               12.5 +/-    1.12      27.5 +/-    1.12  0.070 / 0.130
G28     285.0          54.3                8.8 +/-    2.27      10.6 +/-    2.27  0.040 / 0.030
G30     346.6          68.6               10.4 +/-    0.55      11.1 +/-    0.55  0.040 / 0.030