PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-16:27:30
G02     37.2           52.3               12.4 +/-    0.59      15.2 +/-    0.59  0.040 / 0.050
G05     139.1          64.6               15.5 +/-    1.04      17.0 +/-    1.04  0.040 / 0.050
G06     55.9           14.2               10.7 +/-    1.89      27.0 +/-    1.89  0.050 / 0.040
G12     196.6          63.5               15.2 +/-    1.37      16.8 +/-    1.37  0.050 / 0.040
G20     199.1          30.6               15.0 +/-    3.19      25.9 +/-    3.19  0.080 / 0.210
G25     286.8          57.6               15.3 +/-    1.07      17.8 +/-    1.07  0.070 / 0.140
G29     312.9          35.5               13.6 +/-    1.23      21.3 +/-    1.23  0.060 / 0.160