PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/30-19:12:30
G02     39.4           50.5               13.3 +/-    0.79      16.7 +/-    0.79  0.030 / 0.040
G05     135.6          67.3               16.3 +/-    0.39      17.6 +/-    0.39  0.040 / 0.050
G06     58.8           10.0               11.7 +/-    1.81      32.7 +/-    1.81  0.030 / 0.040
G12     192.0          57.9               15.6 +/-    0.47      18.1 +/-    0.47  0.030 / 0.040
G20     199.3          35.9               15.6 +/-    0.89      24.3 +/-    0.89  0.140 / 0.300
G25     275.3          59.9               10.6 +/-    1.49      12.0 +/-    1.49  0.220 / 0.340
G29     314.8          37.2               13.6 +/-    1.17      20.8 +/-    1.17  0.030 / 0.030