PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/03-19:57:40
G02     62.3           31.1               17.2 +/-    1.47      29.4 +/-    1.47  0.060 / 0.090
G05     57.3           63.5               20.3 +/-    0.46      22.4 +/-    0.46  0.100 / 0.090
G12     184.3          28.1               27.3 +/-    1.09      49.9 +/-    1.09  0.050 / 0.110
G13     126.8          17.8               27.2 +/-    2.14      63.1 +/-    2.14  0.070 / 0.110
G15     162.2          14.7               35.8 +/-    3.51      89.6 +/-    3.51  0.170 / 0.270
G20     209.7          65.5               25.6 +/-    0.70      27.9 +/-    0.70  0.110 / 0.350
G21     274.6          20.5               24.7 +/-    2.03      53.7 +/-    2.03  0.030 / 0.030
G25     225.6          47.6               25.6 +/-    2.41      33.3 +/-    2.41  0.030 / 0.030
G29     334.1          61.7               20.5 +/-    0.53      22.9 +/-    0.53  0.050 / 0.040