PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-19:43:10
G02     8.9            70.8               13.0 +/-    0.73      13.7 +/-    0.73  0.040 / 0.030
G05     162.0          44.2               16.8 +/-    1.06      22.8 +/-    1.06  0.040 / 0.030
G06     46.4           28.3                7.6 +/-   12.81      13.9 +/-   12.81  0.150 / 0.370
G12     251.5          80.0               12.5 +/-    1.45      12.7 +/-    1.45  0.180 / 0.280
G19     88.2           17.6                5.5 +/-   41.12      12.9 +/-   41.12  0.030 / 0.020
G20     197.1          12.3               14.1 +/-   23.28      37.4 +/-   23.28  0.030 / 0.020
G24     220.2          14.1               13.3 +/-    4.39      33.8 +/-    4.39  0.050 / 0.070
G25     310.7          45.9               12.2 +/-    1.14      16.3 +/-    1.14  0.070 / 0.080
G29     296.9          18.7               12.6 +/-    1.43      28.6 +/-    1.43  0.040 / 0.050