PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/30-20:57:40
G02     77.7           19.0               12.3 +/-    2.03      27.7 +/-    2.03  0.100 / 0.140
G05     44.7           44.7               14.6 +/-    0.86      19.8 +/-    0.86  0.110 / 0.150
G13     109.0          30.2               18.5 +/-    0.78      32.2 +/-    0.78  0.130 / 0.160
G15     151.0          31.2               18.6 +/-    1.46      31.7 +/-    1.46  0.100 / 0.170
G18     227.1          20.8               20.4 +/-    4.70      43.9 +/-    4.70  0.080 / 0.340
G20     265.5          85.5               15.5 +/-    0.42      15.6 +/-    0.42  0.090 / 0.460
G21     290.8          32.1               15.8 +/-    1.61      26.5 +/-    1.61  0.070 / 0.160
G25     209.6          30.0               17.4 +/-    1.63      30.4 +/-    1.63  0.080 / 0.140
G26     313.8          14.1              -12.7 +/-   33.28     -32.2 +/-   33.28  0.040 / 0.050
G29     0.7            81.4               15.9 +/-    0.52      16.0 +/-    0.52  0.040 / 0.040