PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/20-10:42:40
G01     320.8          12.1                0.8 +/-    7.80       2.2 +/-    7.80  0.040 / 0.060
G08     267.8          16.2                5.2 +/-    3.89      12.6 +/-    3.89  0.040 / 0.060
G10     68.1           56.9                2.6 +/-    0.71       3.1 +/-    0.71  0.220 / 0.380
G11     310.0          18.1                3.5 +/-    1.39       8.0 +/-    1.39  0.230 / 0.460
G14     270.5          65.2                2.1 +/-    0.62       2.3 +/-    0.62  0.250 / 0.330
G18     310.5          34.1                4.3 +/-    2.53       7.0 +/-    2.53  0.190 / 0.300
G21     155.2          11.4                2.0 +/-    1.08       5.5 +/-    1.08  0.110 / 0.200
G27     228.4          13.0                2.1 +/-   18.51       5.4 +/-   18.51  0.120 / 0.180
G31     176.0          36.2                5.4 +/-    0.90       8.4 +/-    0.90  0.030 / 0.030
G32     356.3          71.3                3.6 +/-    0.59       3.7 +/-    0.59  0.030 / 0.040