PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-23:28:00
G08     263.5          17.3                9.7 +/-    1.81      22.7 +/-    1.81  0.130 / 0.250
G10     65.8           57.1                7.5 +/-    0.31       8.7 +/-    0.31  0.160 / 0.280
G11     309.3          19.3                7.1 +/-    1.35      15.9 +/-    1.35  0.040 / 0.060
G14     271.5          67.2                6.6 +/-    0.51       7.1 +/-    0.51  0.050 / 0.060
G18     310.6          34.9                6.2 +/-    1.05       9.9 +/-    1.05  0.130 / 0.460
G20     97.6           35.1                7.7 +/-    0.42      12.1 +/-    0.42  0.100 / 0.480
G21     155.1          12.8               10.4 +/-    2.36      27.3 +/-    2.36  0.130 / 0.270
G27     231.2          14.7                9.7 +/-    1.92      24.2 +/-    1.92  0.110 / 0.300
G31     177.8          32.9                9.5 +/-    2.23      15.7 +/-    2.23  0.170 / 0.390
G32     349.7          72.7                7.1 +/-    0.39       7.4 +/-    0.39  0.170 / 0.370