PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/26-08:57:40
G01     118.8          18.1                6.4 +/-    1.33      14.7 +/-    1.33  0.040 / 0.030
G07     83.1           65.7                7.2 +/-    0.45       7.8 +/-    0.45  0.030 / 0.030
G08     44.1           29.2                4.0 +/-    1.77       7.0 +/-    1.77  0.030 / 0.030
G09     173.4          20.9                5.9 +/-    1.61      12.7 +/-    1.61  0.030 / 0.020
G11     104.5          40.2                7.9 +/-    0.97      11.4 +/-    0.97  0.150 / 0.190
G13     317.3          20.1                2.5 +/-    1.96       5.6 +/-    1.96  0.140 / 0.180
G17     201.0          26.6                5.6 +/-    1.62      10.6 +/-    1.62  0.170 / 0.310
G18     92.2           20.9                6.6 +/-    1.45      14.2 +/-    1.45  0.160 / 0.360
G28     291.8          56.9                5.0 +/-    1.33       5.9 +/-    1.33  0.140 / 0.280
G30     343.7          67.8                5.1 +/-    0.73       5.5 +/-    0.73  0.120 / 0.260