PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/29-18:42:50
G02     74.0           21.2               16.9 +/-    0.98      36.0 +/-    0.98  0.090 / 0.130
G05     45.9           48.2               15.7 +/-    0.91      20.3 +/-    0.91  0.090 / 0.110
G12     181.7          15.0               17.7 +/-    2.70      44.1 +/-    2.70  0.110 / 0.230
G13     114.4          27.0               18.0 +/-    1.38      33.6 +/-    1.38  0.090 / 0.170
G15     153.5          26.9               18.7 +/-    3.06      35.0 +/-    3.06  0.160 / 0.180
G18     224.4          16.8               18.9 +/-    5.07      45.0 +/-    5.07  0.150 / 0.160
G20     229.4          79.9               16.9 +/-    0.58      17.1 +/-    0.58  0.040 / 0.030
G21     286.7          29.6               15.3 +/-    0.91      27.0 +/-    0.91  0.040 / 0.040
G25     214.5          35.7               16.8 +/-    1.51      26.3 +/-    1.51  0.040 / 0.030
G29     352.5          77.0               19.5 +/-    0.39      19.9 +/-    0.39  0.050 / 0.040