PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/23-05:12:40
G01     113.7          21.5                7.1 +/-    0.79      15.1 +/-    0.79  0.030 / 0.030
G07     96.6           61.4                6.8 +/-    0.63       7.7 +/-    0.63  0.030 / 0.030
G08     42.4           23.8                1.9 +/-    1.20       3.7 +/-    1.20  0.070 / 0.230
G09     174.0          17.5                6.2 +/-    0.89      14.6 +/-    0.89  0.120 / 0.230
G11     96.3           41.8                7.6 +/-    0.68      10.8 +/-    0.68  0.060 / 0.100
G13     314.2          24.4               -0.4 +/-    1.33      -0.7 +/-    1.33  0.060 / 0.090
G17     202.2          33.2                8.1 +/-    1.73      13.2 +/-    1.73  0.040 / 0.050
G28     300.8          58.5                5.4 +/-    0.66       6.2 +/-    0.66  0.040 / 0.060
G30     354.3          72.6                5.7 +/-    0.56       5.9 +/-    0.56  0.030 / 0.040