PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-02:43:10
G02     52.5           38.3               12.0 +/-    0.56      17.9 +/-    0.56  0.070 / 0.070
G05     75.2           66.6               14.9 +/-    0.40      16.1 +/-    0.40  0.060 / 0.070
G12     186.9          43.1               17.3 +/-    0.93      24.0 +/-    0.93  0.090 / 0.360
G20     214.3          12.2                4.0 +/-   31.26      10.6 +/-   31.26  0.090 / 0.400
G21     263.6          11.1                5.0 +/-   25.25      13.7 +/-   25.25  0.020 / 0.040
G25     255.5          57.0               15.6 +/-    0.65      18.2 +/-    0.65  0.030 / 0.050
G29     321.6          45.0               13.6 +/-    0.84      18.3 +/-    0.84  0.050 / 0.060