PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-02:42:40
G07     318.8          52.1                4.5 +/-    0.58       5.5 +/-    0.58  0.260 / 0.270
G08     115.5          47.2                5.4 +/-    0.72       7.1 +/-    0.72  0.120 / 0.210
G09     240.6          82.8                6.3 +/-    0.67       6.4 +/-    0.67  0.040 / 0.040
G16     43.3           19.8                2.0 +/-    2.41       4.4 +/-    2.41  0.040 / 0.050
G23     151.0          54.3                5.3 +/-    0.45       6.4 +/-    0.45  0.140 / 0.310
G27     65.8           35.3                4.0 +/-    1.47       6.3 +/-    1.47  0.070 / 0.260
G28     229.8          21.4                6.4 +/-    2.96      13.6 +/-    2.96  0.040 / 0.040
G30     294.0          29.2                4.1 +/-    1.61       7.4 +/-    1.61  0.050 / 0.050