PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/07-14:27:20
G02     40.7           49.0                8.7 +/-    0.96      11.1 +/-    0.96  0.020 / 0.040
G05     128.3          67.1               12.1 +/-    0.60      13.1 +/-    0.60  0.020 / 0.030
G06     57.2           13.3                6.2 +/-    0.81      16.1 +/-    0.81  0.070 / 0.170
G12     195.0          60.5               11.8 +/-    1.16      13.3 +/-    1.16  0.060 / 0.150
G20     200.1          32.8               13.5 +/-    1.86      22.3 +/-    1.86  0.030 / 0.040
G25     282.4          57.9               10.0 +/-    0.58      11.6 +/-    0.58  0.030 / 0.050
G29     315.8          39.0                7.7 +/-    1.27      11.3 +/-    1.27  0.060 / 0.130