PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-18:12:00
G02     48.4           42.4                9.5 +/-    0.48      13.3 +/-    0.48  0.040 / 0.080
G05     84.5           69.2                9.6 +/-    0.56      10.2 +/-    0.56  0.040 / 0.090
G12     186.7          45.5               10.0 +/-    1.82      13.3 +/-    1.82  0.040 / 0.050
G25     258.8          57.5                9.9 +/-    0.55      11.5 +/-    0.55  0.040 / 0.050
G29     321.1          44.1                9.0 +/-    0.64      12.3 +/-    0.64  0.030 / 0.040