PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-05:28:10
G01     227.3          18.1                7.3 +/-    3.92      16.7 +/-    3.92  0.030 / 0.030
G03     294.1          64.5                4.6 +/-    0.72       5.0 +/-    0.72  0.030 / 0.030
G14     86.1           23.7                6.0 +/-    0.99      12.1 +/-    0.99  0.140 / 0.380
G16     151.6          42.3                9.8 +/-    0.67      13.8 +/-    0.67  0.150 / 0.370
G22     221.9          72.3                5.8 +/-    1.09       6.1 +/-    1.09  0.040 / 0.070
G23     305.2          34.6                5.8 +/-    0.56       9.3 +/-    0.56  0.050 / 0.100
G26     106.0          54.5                7.9 +/-    0.58       9.5 +/-    0.58  0.100 / 0.210
G31     43.8           35.6                3.5 +/-    0.68       5.5 +/-    0.68  0.110 / 0.220