PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-16:57:30
G02     43.8           46.0                7.0 +/-    0.67       9.3 +/-    0.67  0.040 / 0.050
G05     104.8          70.2                8.5 +/-    0.47       8.9 +/-    0.47  0.040 / 0.060
G12     187.7          51.3                9.4 +/-    1.72      11.6 +/-    1.72  0.040 / 0.060
G25     270.7          58.1                8.9 +/-    0.52      10.3 +/-    0.52  0.050 / 0.080
G29     317.1          39.0                7.2 +/-    1.08      10.6 +/-    1.08  0.050 / 0.080