PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/29-22:57:50
G10     286.4          47.9                9.7 +/-    0.99      12.6 +/-    0.99  0.060 / 0.130
G15     49.2           39.0                7.3 +/-    0.63      10.8 +/-    0.63  0.080 / 0.100
G20     280.7          35.7                8.3 +/-    0.83      12.9 +/-    0.83  0.040 / 0.050
G21     58.9           77.7               11.1 +/-    0.53      11.4 +/-    0.53  0.040 / 0.050
G24     103.8          23.0               11.4 +/-    2.62      23.3 +/-    2.62  0.080 / 0.210
G27     308.4          29.9                8.5 +/-    1.62      14.9 +/-    1.62  0.070 / 0.230
G29     169.0          16.1               15.8 +/-    1.10      38.4 +/-    1.10  0.040 / 0.050
G32     207.3          26.0               12.7 +/-    1.56      24.3 +/-    1.56  0.040 / 0.060