PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-09:57:40
G01     117.8          18.8                4.9 +/-    1.11      11.0 +/-    1.11  0.100 / 0.270
G07     85.6           65.2                5.5 +/-    0.57       6.0 +/-    0.57  0.060 / 0.280
G08     43.8           28.4                2.3 +/-    0.59       4.2 +/-    0.59  0.030 / 0.040
G09     173.7          20.4                5.0 +/-    0.85      11.0 +/-    0.85  0.030 / 0.030
G11     103.1          40.6                7.4 +/-    0.88      10.7 +/-    0.88  0.060 / 0.090
G13     316.8          21.0                1.9 +/-    2.01       4.0 +/-    2.01  0.060 / 0.090
G17     201.5          27.5                7.8 +/-    1.33      14.5 +/-    1.33  0.110 / 0.210
G18     91.3           21.3                4.7 +/-    1.01      10.0 +/-    1.01  0.110 / 0.250
G28     294.2          57.5                5.3 +/-    0.76       6.2 +/-    0.76  0.040 / 0.030
G30     345.9          68.9                3.8 +/-    0.96       4.0 +/-    0.96  0.020 / 0.040