PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-13:12:40
G01     116.2          19.7                7.6 +/-    1.58      16.9 +/-    1.58  0.150 / 0.190
G07     91.4           62.0                7.9 +/-    0.48       8.8 +/-    0.48  0.210 / 0.240
G08     43.5           27.1                6.2 +/-    1.14      11.6 +/-    1.14  0.020 / 0.030
G09     174.9          21.1                7.0 +/-    2.83      15.0 +/-    2.83  0.040 / 0.030
G11     99.8           39.3                7.3 +/-    0.70      10.7 +/-    0.70  0.030 / 0.030
G13     317.3          19.9                5.7 +/-    1.82      12.6 +/-    1.82  0.030 / 0.030
G17     201.7          30.0                6.7 +/-    1.60      11.7 +/-    1.60  0.130 / 0.340
G28     298.7          58.3                6.3 +/-    0.58       7.3 +/-    0.58  0.140 / 0.360
G30     347.7          69.2                6.3 +/-    0.56       6.7 +/-    0.56  0.060 / 0.090