PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/25-15:57:50
G02     330.2          80.2               12.0 +/-    0.39      12.1 +/-    0.39  0.120 / 0.110
G05     168.7          29.0               18.6 +/-    1.42      33.4 +/-    1.42  0.130 / 0.120
G06     41.0           43.3               15.4 +/-    0.96      21.3 +/-    0.96  0.030 / 0.020
G12     314.0          68.8                9.3 +/-    0.70       9.9 +/-    0.70  0.030 / 0.030
G17     86.1           10.2               11.7 +/-    1.99      32.5 +/-    1.99  0.190 / 0.260
G19     74.7           26.8               10.1 +/-    1.78      18.9 +/-    1.78  0.370 / 0.360
G24     231.4          24.5               13.7 +/-    3.44      27.0 +/-    3.44  0.210 / 0.240
G25     317.3          29.9                8.7 +/-    1.48      15.2 +/-    1.48  0.200 / 0.260
G29     286.5          11.0               -1.6 +/-   22.38      -4.4 +/-   22.38  0.060 / 0.110