PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-19:27:50
G02     59.0           33.7                8.7 +/-    0.92      14.1 +/-    0.92  0.100 / 0.070
G05     63.7           66.3                9.9 +/-    0.48      10.7 +/-    0.48  0.080 / 0.050
G12     185.3          32.6                9.0 +/-    1.22      14.9 +/-    1.22  0.060 / 0.100
G13     130.1          14.9               11.1 +/-    2.13      27.6 +/-    2.13  0.080 / 0.090
G15     164.3          11.5               10.8 +/-   14.88      29.2 +/-   14.88  0.040 / 0.030
G20     207.2          60.6               10.8 +/-    0.66      12.2 +/-    0.66  0.030 / 0.030
G21     271.2          18.1                9.4 +/-    1.08      21.7 +/-    1.08  0.150 / 0.170
G25     231.1          51.1               10.3 +/-    2.14      12.8 +/-    2.14  0.180 / 0.260
G29     331.1          57.8                9.8 +/-    0.61      11.3 +/-    0.61  0.230 / 0.480