PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/06-17:42:40
G02     63.0           29.9               16.1 +/-    0.53      28.3 +/-    0.53  0.140 / 0.120
G05     55.5           61.1               16.3 +/-    0.56      18.3 +/-    0.56  0.110 / 0.130
G12     184.9          28.7               19.9 +/-    3.12      35.8 +/-    3.12  0.100 / 0.320
G13     126.6          17.9               20.9 +/-    2.34      48.4 +/-    2.34  0.080 / 0.330
G15     161.3          15.3               24.3 +/-    2.09      60.2 +/-    2.09  0.050 / 0.070
G20     210.4          64.5               21.0 +/-    1.55      23.0 +/-    1.55  0.070 / 0.080
G21     275.1          21.5               15.2 +/-    1.85      32.3 +/-    1.85  0.030 / 0.040
G25     227.6          48.1               19.4 +/-    1.15      25.1 +/-    1.15  0.040 / 0.060
G29     336.1          63.2               15.6 +/-    0.69      17.3 +/-    0.69  0.040 / 0.040