PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-14:27:40
G01     119.5          16.6                8.0 +/-    1.83      19.0 +/-    1.83  0.030 / 0.050
G07     84.8           63.4                7.1 +/-    0.84       7.8 +/-    0.84  0.030 / 0.050
G08     46.1           34.3                5.7 +/-    0.56       9.1 +/-    0.56  0.050 / 0.070
G09     177.8          28.8                7.7 +/-    1.73      13.9 +/-    1.73  0.040 / 0.070
G11     108.1          40.2                7.7 +/-    1.04      11.2 +/-    1.04  0.050 / 0.100
G13     317.9          19.3                7.8 +/-    1.43      17.5 +/-    1.43  0.050 / 0.090
G17     201.3          21.2                8.9 +/-    0.87      19.0 +/-    0.87  0.090 / 0.270
G18     94.4           20.2                7.7 +/-    0.69      16.8 +/-    0.69  0.090 / 0.310
G28     282.3          52.9                8.0 +/-    1.73       9.8 +/-    1.73  0.110 / 0.170
G30     349.6          69.5                6.8 +/-    0.93       7.2 +/-    0.93  0.080 / 0.150