PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/21-00:12:40
G08     317.2          14.5                9.1 +/-    2.65      22.9 +/-    2.65  0.050 / 0.070
G10     312.1          56.1               10.9 +/-    1.84      12.9 +/-    1.84  0.060 / 0.070
G14     213.2          19.3               15.3 +/-    4.07      34.3 +/-    4.07  0.030 / 0.030
G15     45.8           23.3                9.0 +/-    2.63      18.3 +/-    2.63  0.030 / 0.030
G20     303.9          50.6                9.1 +/-    0.55      11.4 +/-    0.55  0.330 / 0.540
G21     118.4          68.5               12.5 +/-    0.87      13.3 +/-    0.87  0.170 / 0.460
G24     85.2           28.8               13.5 +/-    0.97      24.3 +/-    0.97  0.090 / 0.090
G27     289.9          37.0               10.9 +/-    1.94      16.8 +/-    1.94  0.070 / 0.110
G32     214.9          43.1               14.4 +/-    1.08      19.9 +/-    1.08  0.230 / 0.230