PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/15-16:57:50
G10     265.0          37.4                9.1 +/-    1.28      13.9 +/-    1.28  0.030 / 0.030
G13     42.7           19.4                6.1 +/-    2.03      13.6 +/-    2.03  0.030 / 0.040
G15     63.4           52.3                8.5 +/-    0.88      10.4 +/-    0.88  0.150 / 0.200
G16     281.5          12.7                7.2 +/-    1.15      19.0 +/-    1.15  0.110 / 0.390
G20     294.1          59.5                8.8 +/-    0.70      10.1 +/-    0.70  0.150 / 0.370
G21     4.0            71.4                9.0 +/-    0.24       9.4 +/-    0.24  0.200 / 0.390
G24     118.2          13.5               10.3 +/-    2.73      26.5 +/-    2.73  0.110 / 0.250
G27     320.3          15.6                7.2 +/-    1.18      17.6 +/-    1.18  0.140 / 0.220
G29     167.1          32.6                9.3 +/-    0.89      15.4 +/-    0.89  0.030 / 0.060