PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/13-18:12:50
G08     268.2          19.6                6.0 +/-    1.66      13.2 +/-    1.66  0.130 / 0.260
G10     56.1           59.0                6.1 +/-    0.84       7.0 +/-    0.84  0.180 / 0.330
G11     312.8          16.2                4.9 +/-   10.25      11.8 +/-   10.25  0.030 / 0.040
G14     260.5          65.0                6.1 +/-    0.58       6.6 +/-    0.58  0.030 / 0.030
G18     312.9          32.1                5.2 +/-    2.37       8.7 +/-    2.37  0.050 / 0.050
G20     92.3           38.6                7.4 +/-    0.54      11.0 +/-    0.54  0.050 / 0.060
G21     153.4          15.5                7.7 +/-    3.85      19.0 +/-    3.85  0.120 / 0.380
G27     236.5          18.6                8.8 +/-    1.04      20.1 +/-    1.04  0.140 / 0.320
G31     181.4          24.2                9.4 +/-    1.77      18.7 +/-    1.77  0.140 / 0.230
G32     323.2          75.5                7.3 +/-    0.63       7.6 +/-    0.63  0.140 / 0.290