PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/14-18:57:30
G02     28.7           58.8                7.4 +/-    0.88       8.5 +/-    0.88  0.030 / 0.040
G05     142.8          60.6               10.0 +/-    0.45      11.4 +/-    0.45  0.030 / 0.040
G06     53.5           15.1                6.1 +/-    1.25      15.1 +/-    1.25  0.020 / 0.040
G12     191.0          66.5                7.7 +/-    0.68       8.3 +/-    0.68  0.030 / 0.030
G19     97.5           13.6                7.9 +/-    1.36      20.4 +/-    1.36  0.050 / 0.060
G25     298.5          53.2                7.8 +/-    1.47       9.5 +/-    1.47  0.070 / 0.060
G29     305.5          25.5                7.4 +/-    0.54      14.3 +/-    0.54  0.090 / 0.170