PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-21:13:10
G02     55.0           37.5               12.6 +/-    0.49      19.2 +/-    0.49  0.110 / 0.290
G05     71.0           68.2               12.2 +/-    0.36      13.1 +/-    0.36  0.140 / 0.340
G12     185.4          36.0               15.9 +/-    3.08      24.8 +/-    3.08  0.030 / 0.090
G13     132.7          12.5               19.3 +/-    2.41      51.0 +/-    2.41  0.030 / 0.080
G20     204.9          57.1               16.3 +/-    1.40      19.0 +/-    1.40  0.040 / 0.060
G21     267.9          15.1               14.1 +/-    1.20      35.0 +/-    1.20  0.030 / 0.050
G25     234.3          53.7               13.5 +/-    1.18      16.3 +/-    1.18  0.040 / 0.050
G29     327.4          53.1               11.5 +/-    1.00      13.9 +/-    1.00  0.030 / 0.070