PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-15:43:00
G02     256.1          76.1                8.1 +/-    0.39       8.3 +/-    0.39  0.130 / 0.160
G05     171.1          20.4                9.3 +/-    1.10      20.2 +/-    1.10  0.130 / 0.190
G06     40.1           50.5                7.4 +/-    0.73       9.3 +/-    0.73  0.030 / 0.040
G12     321.5          62.7                8.4 +/-    0.76       9.3 +/-    0.76  0.030 / 0.030
G17     76.9           17.3                7.6 +/-    1.72      17.9 +/-    1.72  0.280 / 0.250
G19     60.3           38.4                8.3 +/-    1.56      12.3 +/-    1.56  0.200 / 0.260
G24     236.0          30.3               10.0 +/-    1.85      17.4 +/-    1.85  0.110 / 0.110
G25     317.4          19.8                6.4 +/-    1.45      14.0 +/-    1.45  0.090 / 0.140