PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-09:13:00
G03     255.3          69.7                6.6 +/-    0.80       7.0 +/-    0.80  0.030 / 0.040
G09     301.1          16.1                3.9 +/-    0.96       9.5 +/-    0.96  0.030 / 0.040
G14     94.9           19.8                4.4 +/-    1.52       9.6 +/-    1.52  0.150 / 0.200
G16     130.2          55.8                7.8 +/-    0.49       9.2 +/-    0.49  0.100 / 0.240
G22     197.6          59.8                7.5 +/-    0.47       8.5 +/-    0.47  0.030 / 0.050
G23     316.5          46.5                5.9 +/-    1.01       7.8 +/-    1.01  0.030 / 0.040
G26     74.2           52.1                6.1 +/-    0.88       7.6 +/-    0.88  0.050 / 0.060
G31     50.5           21.3                3.8 +/-    2.79       8.1 +/-    2.79  0.070 / 0.050