PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/21-19:43:00
G08     268.3          19.6                7.6 +/-    2.41      16.8 +/-    2.41  0.040 / 0.050
G10     55.9           59.1                9.1 +/-    1.23      10.4 +/-    1.23  0.040 / 0.040
G11     312.9          16.2                7.5 +/-    2.44      18.0 +/-    2.44  0.110 / 0.260
G14     260.2          64.7               10.2 +/-    0.81      11.1 +/-    0.81  0.140 / 0.300
G20     92.3           38.6                8.9 +/-    1.31      13.3 +/-    1.31  0.130 / 0.240
G21     153.7          16.5                8.7 +/-    1.74      20.8 +/-    1.74  0.200 / 0.240
G27     236.2          18.5                9.3 +/-    3.43      21.2 +/-    3.43  0.080 / 0.380
G31     180.5          25.2               10.2 +/-    1.55      19.8 +/-    1.55  0.100 / 0.240
G32     325.8          75.5                9.6 +/-    0.42       9.9 +/-    0.42  0.080 / 0.130