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                3.7 +/-    0.99       6.2 +/-    0.99  0.040 / 0.060
G07     138.6          27.8                5.6 +/-    1.29      10.2 +/-    1.29  0.040 / 0.050
G11     52.2           28.4                1.7 +/-    0.77       3.1 +/-    0.77  0.080 / 0.130
G13     273.5          36.7                5.9 +/-    1.52       9.1 +/-    1.52  0.050 / 0.110
G15     300.6          15.9                2.2 +/-    1.33       5.3 +/-    1.33  0.080 / 0.280
G17     239.9          72.9                6.4 +/-    0.70       6.6 +/-    0.70  0.160 / 0.300
G19     226.2          45.8                7.0 +/-    0.67       9.3 +/-    0.67  0.030 / 0.040
G28     24.7           58.4                3.7 +/-    0.29       4.2 +/-    0.29  0.030 / 0.030
G30     137.2          59.3                5.2 +/-    0.61       6.0 +/-    0.61  0.060 / 0.090