PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/21-00:12:50
G08     262.0          16.5                8.5 +/-    1.15      20.4 +/-    1.15  0.170 / 0.350
G10     69.0           56.3                9.0 +/-    0.79      10.6 +/-    0.79  0.230 / 0.450
G11     308.0          20.3                5.0 +/-    2.88      10.9 +/-    2.88  0.040 / 0.050
G14     275.7          67.9                7.9 +/-    0.51       8.5 +/-    0.51  0.030 / 0.050
G18     309.5          36.2                8.1 +/-    1.44      12.6 +/-    1.44  0.190 / 0.360
G20     99.3           33.8                8.2 +/-    0.89      13.2 +/-    0.89  0.110 / 0.250
G21     155.4          11.3                9.6 +/-    1.37      26.1 +/-    1.37  0.190 / 0.320
G27     229.7          13.4                9.3 +/-    1.65      24.0 +/-    1.65  0.140 / 0.330
G31     177.1          35.1                8.0 +/-    2.11      12.7 +/-    2.11  0.180 / 0.290
G32     355.3          71.5                7.0 +/-    0.24       7.3 +/-    0.24  0.240 / 0.310