PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-02:28:00
G01     312.3          28.5                8.2 +/-    1.71      14.7 +/-    1.71  0.030 / 0.040
G10     97.7           45.9                9.4 +/-    0.62      12.5 +/-    0.62  0.030 / 0.050
G11     288.0          28.8                8.4 +/-    1.81      15.1 +/-    1.81  0.090 / 0.160
G14     344.0          69.4                8.6 +/-    1.21       9.2 +/-    1.21  0.090 / 0.170
G18     112.2          20.0               10.7 +/-    0.95      23.6 +/-    0.95  0.030 / 0.030
G22     306.6          20.0               10.3 +/-    1.66      22.7 +/-    1.66  0.030 / 0.040
G25     85.8           14.0               10.5 +/-    1.25      26.8 +/-    1.25  0.120 / 0.250
G31     174.2          55.5               13.2 +/-    0.87      15.6 +/-    0.87  0.130 / 0.270
G32     24.1           59.5                8.1 +/-    0.42       9.2 +/-    0.42  0.070 / 0.170