PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/04-15:27:40
G02     57.8           33.9                9.3 +/-    1.17      15.0 +/-    1.17  0.040 / 0.020
G05     65.7           65.6                9.8 +/-    0.45      10.6 +/-    0.45  0.030 / 0.030
G12     186.8          36.8               10.6 +/-    1.38      16.3 +/-    1.38  0.100 / 0.180
G13     132.0          13.0               13.4 +/-    4.39      34.9 +/-    4.39  0.190 / 0.230
G20     206.7          55.5               12.4 +/-    0.60      14.7 +/-    0.60  0.040 / 0.050
G21     269.8          18.2                9.5 +/-    0.94      21.9 +/-    0.94  0.040 / 0.040
G25     239.3          53.7               11.0 +/-    4.29      13.3 +/-    4.29  0.070 / 0.080
G29     331.7          57.5                9.0 +/-    0.76      10.5 +/-    0.76  0.050 / 0.070