PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/28-17:27:20
G02     39.0           50.0                9.1 +/-    0.41      11.5 +/-    0.41  0.030 / 0.050
G05     119.2          68.6                9.3 +/-    0.47      10.0 +/-    0.47  0.040 / 0.050
G12     190.2          57.2               10.2 +/-    1.66      11.8 +/-    1.66  0.050 / 0.050
G25     280.8          57.3                8.9 +/-    0.91      10.4 +/-    0.91  0.040 / 0.050
G29     313.9          35.3                9.2 +/-    0.90      14.6 +/-    0.90  0.030 / 0.040