PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-20:12:30
G02     50.9           40.7                9.1 +/-    0.85      13.0 +/-    0.85  0.030 / 0.030
G05     76.8           67.8                9.5 +/-    0.53      10.2 +/-    0.53  0.020 / 0.030
G12     183.1          39.1               13.6 +/-    1.11      20.1 +/-    1.11  0.040 / 0.090
G21     263.9          10.7                4.4 +/-   21.17      12.1 +/-   21.17  0.050 / 0.070
G25     251.0          57.0               11.5 +/-    1.54      13.5 +/-    1.54  0.050 / 0.060
G29     321.6          44.9                8.7 +/-    1.33      11.7 +/-    1.33  0.040 / 0.060