PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/14-06:57:40
G07     331.5          57.3                4.5 +/-    0.60       5.2 +/-    0.60  0.030 / 0.050
G08     100.9          50.7                7.3 +/-    0.74       9.1 +/-    0.74  0.040 / 0.050
G09     191.8          75.7                7.4 +/-    0.58       7.7 +/-    0.58  0.090 / 0.200
G11     146.3          11.3                7.7 +/-    2.49      20.9 +/-    2.49  0.090 / 0.210
G16     45.5           13.5                2.1 +/-    1.81       5.4 +/-    1.81  0.030 / 0.030
G23     155.0          46.4               10.1 +/-    1.58      13.4 +/-    1.58  0.030 / 0.030
G27     56.8           32.1                4.2 +/-    0.77       7.0 +/-    0.77  0.080 / 0.240
G28     235.6          28.0                8.7 +/-    1.57      15.9 +/-    1.57  0.080 / 0.250
G30     299.4          32.7                5.1 +/-    1.34       8.5 +/-    1.34  0.030 / 0.050