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               13.6 +/-    1.72      30.8 +/-    1.72  0.060 / 0.170
G05     44.7           44.7               13.8 +/-    0.58      18.7 +/-    0.58  0.060 / 0.160
G13     109.0          30.2               16.7 +/-    1.31      29.2 +/-    1.31  0.110 / 0.420
G15     151.0          31.2               18.8 +/-    1.83      32.1 +/-    1.83  0.080 / 0.160
G18     227.1          20.8               18.1 +/-    2.41      38.9 +/-    2.41  0.080 / 0.130
G20     265.5          85.5               16.9 +/-    0.71      16.9 +/-    0.71  0.100 / 0.150
G21     290.8          32.1               15.3 +/-    0.95      25.8 +/-    0.95  0.090 / 0.170
G25     209.6          30.0               15.9 +/-    2.17      27.8 +/-    2.17  0.030 / 0.070
G26     313.8          14.1              -17.8 +/-   31.18     -45.3 +/-   31.18  0.030 / 0.060
G29     0.7            81.4               15.2 +/-    0.36      15.3 +/-    0.36  0.060 / 0.170