PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-18:57:30
G02     51.1           40.3               14.0 +/-    1.12      20.3 +/-    1.12  0.060 / 0.050
G05     90.4           71.3               15.6 +/-    0.48      16.4 +/-    0.48  0.050 / 0.040
G12     187.5          43.1               16.4 +/-    0.93      22.7 +/-    0.93  0.050 / 0.060
G20     203.0          49.9               15.7 +/-    0.78      19.9 +/-    0.78  0.050 / 0.070
G21     263.7          12.2               10.8 +/-   20.95      28.6 +/-   20.95  0.330 / 0.450
G25     247.2          57.4               15.7 +/-    1.45      18.2 +/-    1.45  0.330 / 0.630
G29     324.4          48.9               15.2 +/-    0.56      19.4 +/-    0.56  0.020 / 0.020