PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-20:57:50
G05     49.6           17.6               12.0 +/-    0.45      28.0 +/-    0.45  0.190 / 0.230
G10     239.0          14.6               20.1 +/-    1.91      50.4 +/-    1.91  0.170 / 0.280
G13     72.3           37.1               13.1 +/-    0.56      20.0 +/-    0.56  0.170 / 0.460
G15     118.0          54.5               13.7 +/-    0.56      16.4 +/-    0.56  0.180 / 0.460
G16     313.4          11.8               12.2 +/-    2.61      32.7 +/-    2.61  0.050 / 0.070
G18     249.7          45.4               14.2 +/-    1.16      19.0 +/-    1.16  0.050 / 0.070
G20     31.8           62.1               14.6 +/-    0.65      16.3 +/-    0.65  0.060 / 0.180
G21     317.9          50.8               16.8 +/-    1.21      21.0 +/-    1.21  0.080 / 0.150
G26     286.7          19.0               14.1 +/-    1.09      31.7 +/-    1.09  0.030 / 0.030
G29     156.5          63.2               15.7 +/-    1.11      17.3 +/-    1.11  0.020 / 0.050