PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-17:12:30
G02     328.4          80.0               13.4 +/-    0.60      13.6 +/-    0.60  0.020 / 0.040
G05     169.4          28.8               15.6 +/-    1.88      28.0 +/-    1.88  0.030 / 0.040
G06     41.3           42.1               11.2 +/-    0.56      15.8 +/-    0.56  0.100 / 0.220
G12     313.0          70.0               11.5 +/-    1.58      12.1 +/-    1.58  0.120 / 0.240
G19     75.4           26.3               12.5 +/-    1.85      23.7 +/-    1.85  0.040 / 0.050
G24     230.9          24.1               12.9 +/-    1.63      25.7 +/-    1.63  0.030 / 0.050
G25     317.1          31.2               13.0 +/-    1.81      22.3 +/-    1.81  0.070 / 0.110
G29     286.6          10.6               -3.3 +/-   25.61      -9.0 +/-   25.61  0.070 / 0.120