PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/17-22:58:10
G01     120.4          16.5               10.4 +/-    1.53      25.0 +/-    1.53  0.110 / 0.130
G07     83.0           64.2                9.1 +/-    0.72      10.0 +/-    0.72  0.110 / 0.110
G08     45.0           31.1                7.3 +/-    0.85      12.5 +/-    0.85  0.110 / 0.110
G09     177.1          28.2               10.6 +/-    2.04      19.4 +/-    2.04  0.130 / 0.100
G11     106.9          39.6               10.9 +/-    0.73      16.0 +/-    0.73  0.040 / 0.040
G13     318.3          18.6                6.8 +/-    1.49      15.4 +/-    1.49  0.030 / 0.030
G17     200.1          24.6               12.3 +/-    3.24      24.3 +/-    3.24  0.130 / 0.230
G18     92.1           19.8                9.3 +/-    1.58      20.6 +/-    1.58  0.120 / 0.170
G28     284.6          54.4                9.2 +/-    2.83      11.0 +/-    2.83  0.040 / 0.070
G30     342.8          67.0                7.9 +/-    0.69       8.5 +/-    0.69  0.060 / 0.120