PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/09-14:12:40
G05     50.2           14.5                3.4 +/-    0.83       8.7 +/-    0.83  0.130 / 0.390
G10     239.2          16.5                4.1 +/-    2.04       9.9 +/-    2.04  0.100 / 0.340
G13     69.3           35.3                7.1 +/-    0.75      11.2 +/-    0.75  0.060 / 0.050
G15     118.9          55.1                7.0 +/-    0.52       8.3 +/-    0.52  0.060 / 0.060
G16     311.1          13.1                2.6 +/-    3.89       6.7 +/-    3.89  0.130 / 0.190
G20     252.8          40.6                6.1 +/-    1.66       8.8 +/-    1.66  0.250 / 0.190
G21     321.0          52.4                4.0 +/-    1.11       4.9 +/-    1.11  0.080 / 0.090
G26     285.0          19.1                3.9 +/-    1.36       8.7 +/-    1.36  0.060 / 0.090
G29     156.9          65.4                7.3 +/-    0.39       8.0 +/-    0.39  0.030 / 0.030