PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-19:42:40
G02     59.9           33.0               16.8 +/-    1.22      27.7 +/-    1.22  0.080 / 0.110
G05     61.7           65.5               19.4 +/-    0.52      21.1 +/-    0.52  0.070 / 0.070
G12     185.0          31.3               21.3 +/-    1.94      36.4 +/-    1.94  0.110 / 0.090
G13     129.2          15.8               20.5 +/-    1.86      50.1 +/-    1.86  0.080 / 0.080
G15     163.7          12.4               29.8 +/-    2.85      78.9 +/-    2.85  0.120 / 0.220
G20     207.8          62.1               23.2 +/-    0.58      25.8 +/-    0.58  0.140 / 0.180
G21     272.2          18.7               20.9 +/-    1.93      47.3 +/-    1.93  0.030 / 0.030
G25     229.3          50.2               20.8 +/-    3.30      26.2 +/-    3.30  0.030 / 0.030
G29     331.9          58.8               17.6 +/-    0.30      20.2 +/-    0.30  0.060 / 0.040