PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-22:12:30
G08     298.4          23.0                8.2 +/-    1.10      16.8 +/-    1.10  0.070 / 0.090
G10     354.2          62.4                6.9 +/-    0.77       7.7 +/-    0.77  0.060 / 0.110
G14     224.6          40.1                9.5 +/-    1.23      13.8 +/-    1.23  0.100 / 0.110
G20     55.8           55.6                8.6 +/-    0.58      10.2 +/-    0.58  0.070 / 0.120
G21     142.9          46.4               10.8 +/-    1.30      14.3 +/-    1.30  0.060 / 0.080
G24     59.8           26.2                9.5 +/-    0.69      18.1 +/-    0.69  0.070 / 0.090
G27     263.1          34.5               10.8 +/-    1.62      17.3 +/-    1.62  0.060 / 0.120
G32     235.3          63.3               10.3 +/-    1.27      11.4 +/-    1.27  0.070 / 0.110