PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-16:58:00
G02     43.8           46.0                7.5 +/-    0.73      10.0 +/-    0.73  0.050 / 0.050
G05     104.8          70.2                8.0 +/-    0.41       8.5 +/-    0.41  0.040 / 0.040
G12     187.7          51.3                9.8 +/-    1.10      12.2 +/-    1.10  0.040 / 0.050
G25     270.7          58.1                9.0 +/-    0.69      10.4 +/-    0.69  0.040 / 0.050
G29     317.1          39.0                7.2 +/-    1.29      10.7 +/-    1.29  0.070 / 0.060