PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/09-14:57:30
G02     54.5           36.6                5.2 +/-    0.37       7.9 +/-    0.37  0.020 / 0.030
G05     75.2           68.0                7.6 +/-    0.51       8.1 +/-    0.51  0.020 / 0.030
G12     187.9          41.5                8.6 +/-    1.13      12.3 +/-    1.13  0.070 / 0.050
G13     135.1          10.2               -8.0 +/-   17.48     -22.2 +/-   17.48  0.050 / 0.080
G20     205.0          50.7                8.6 +/-    1.83      10.7 +/-    1.83  0.280 / 0.370
G21     266.5          15.8                8.0 +/-    1.58      19.6 +/-    1.58  0.210 / 0.430
G25     247.0          56.1                7.9 +/-    0.93       9.3 +/-    0.93  0.040 / 0.060
G29     328.1          53.4                3.4 +/-    0.86       4.1 +/-    0.86  0.040 / 0.070