PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-20:42:40
G05     47.5           20.3                7.6 +/-    1.12      16.7 +/-    1.12  0.160 / 0.600
G10     233.9          11.4                3.8 +/-   39.23      10.3 +/-   39.23  0.220 / 0.610
G13     78.9           35.4                9.3 +/-    0.67      14.6 +/-    0.67  0.210 / 0.390
G15     129.7          50.2               10.8 +/-    1.14      13.6 +/-    1.14  0.200 / 0.380
G16     316.8          11.2                6.7 +/-    4.48      18.1 +/-    4.48  0.130 / 0.290
G20     245.5          34.7               12.9 +/-    1.15      20.6 +/-    1.15  0.130 / 0.260
G21     309.9          44.0                8.5 +/-    1.22      11.6 +/-    1.22  0.050 / 0.090
G25     201.7          14.4               15.0 +/-    1.84      37.9 +/-    1.84  0.050 / 0.090
G26     291.0          20.2                9.9 +/-    2.04      21.7 +/-    2.04  0.070 / 0.130
G29     148.7          76.3               10.4 +/-    0.51      10.7 +/-    0.51  0.070 / 0.120