PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-05:27:50
G03     223.6          63.0                8.7 +/-    1.54       9.7 +/-    1.54  0.040 / 0.060
G07     253.5          12.8                7.7 +/-    2.42      20.1 +/-    2.42  0.050 / 0.060
G09     309.6          28.9                5.3 +/-    1.57       9.6 +/-    1.57  0.170 / 0.260
G14     105.7          9.9                 6.2 +/-    1.97      17.4 +/-    1.97  0.190 / 0.280
G16     104.6          63.0                8.1 +/-    0.66       8.9 +/-    0.66  0.030 / 0.050
G22     191.7          47.4                9.2 +/-    0.66      12.0 +/-    0.66  0.040 / 0.050
G23     325.1          55.0                6.9 +/-    0.49       8.2 +/-    0.49  0.270 / 0.260
G26     57.7           46.0                6.9 +/-    1.00       9.2 +/-    1.00  0.270 / 0.230
G31     56.8           13.0                2.7 +/-    2.66       7.1 +/-    2.66  0.040 / 0.050