PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/25-18:27:50
G02     62.8           30.3               14.9 +/-    0.93      25.9 +/-    0.93  0.110 / 0.110
G05     55.9           61.7               15.8 +/-    0.83      17.7 +/-    0.83  0.070 / 0.170
G12     184.7          28.5               15.5 +/-    2.64      27.9 +/-    2.64  0.090 / 0.340
G13     126.7          17.9               18.1 +/-    1.82      41.9 +/-    1.82  0.100 / 0.300
G15     161.6          15.1               18.1 +/-    2.88      44.9 +/-    2.88  0.030 / 0.050
G20     210.1          64.9               20.3 +/-    0.78      22.2 +/-    0.78  0.040 / 0.050
G21     274.9          21.2               15.3 +/-    1.82      32.8 +/-    1.82  0.060 / 0.060
G25     227.0          47.9               17.5 +/-    2.14      22.7 +/-    2.14  0.050 / 0.080
G29     335.4          62.7               16.8 +/-    0.92      18.6 +/-    0.92  0.040 / 0.040