PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/25-20:12:40
G05     47.8           19.5                7.2 +/-    2.18      16.1 +/-    2.18  0.060 / 0.070
G10     234.6          12.4                2.9 +/-   35.00       7.7 +/-   35.00  0.040 / 0.100
G13     77.3           35.4                9.9 +/-    1.37      15.6 +/-    1.37  0.080 / 0.120
G15     128.4          51.0                9.8 +/-    0.43      12.3 +/-    0.43  0.070 / 0.130
G16     315.7          11.8                4.1 +/-   21.20      11.1 +/-   21.20  0.030 / 0.050
G20     246.7          35.9               10.9 +/-    1.55      17.0 +/-    1.55  0.040 / 0.050
G21     311.1          44.8                9.1 +/-    0.97      12.3 +/-    0.97  0.160 / 0.310
G25     201.1          13.5               10.7 +/-    2.20      27.5 +/-    2.20  0.150 / 0.360
G26     289.7          20.2                7.4 +/-    1.74      16.1 +/-    1.74  0.220 / 0.440
G29     150.5          75.1                8.5 +/-    0.52       8.8 +/-    0.52  0.190 / 0.420