PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/11-08:27:50
G01     68.1           32.5                3.8 +/-    0.96       6.4 +/-    0.96  0.040 / 0.040
G07     138.6          27.8                5.8 +/-    1.15      10.6 +/-    1.15  0.040 / 0.040
G11     52.2           28.4                3.1 +/-    1.81       5.5 +/-    1.81  0.040 / 0.080
G13     273.5          36.7                4.0 +/-    1.93       6.2 +/-    1.93  0.060 / 0.090
G15     300.6          15.9                0.9 +/-    2.19       2.1 +/-    2.19  0.020 / 0.030
G17     239.9          72.9                6.1 +/-    0.43       6.3 +/-    0.43  0.030 / 0.030
G19     226.2          45.8                5.3 +/-    2.50       7.1 +/-    2.50  0.040 / 0.070
G28     24.7           58.4                5.9 +/-    1.67       6.8 +/-    1.67  0.050 / 0.070
G30     137.2          59.3                6.0 +/-    0.61       6.8 +/-    0.61  0.120 / 0.260