PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/28-18:27:30
G02     61.7           31.8                7.0 +/-    1.54      11.8 +/-    1.54  0.110 / 0.320
G05     52.9           58.0                7.7 +/-    0.70       8.8 +/-    0.70  0.100 / 0.260
G12     183.2          28.0               10.4 +/-    1.70      19.0 +/-    1.70  0.090 / 0.220
G13     122.8          18.1               11.7 +/-    2.50      26.9 +/-    2.50  0.080 / 0.260
G15     161.8          16.0               13.0 +/-    2.90      31.5 +/-    2.90  0.190 / 0.260
G21     275.3          19.4                9.0 +/-    1.58      20.2 +/-    1.58  0.110 / 0.320
G25     231.4          48.8                9.9 +/-    1.80      12.6 +/-    1.80  0.060 / 0.090
G29     331.9          58.9                8.9 +/-    0.69      10.2 +/-    0.69  0.060 / 0.120