PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-20:27:40
G02     34.3           53.9                8.4 +/-    1.11      10.2 +/-    1.11  0.060 / 0.050
G05     133.4          64.3                8.8 +/-    0.55       9.7 +/-    0.55  0.050 / 0.050
G06     54.8           13.7                7.4 +/-    3.56      19.0 +/-    3.56  0.050 / 0.060
G12     198.4          66.5                8.0 +/-    0.25       8.7 +/-    0.25  0.050 / 0.050
G25     293.7          54.4                9.3 +/-    1.70      11.1 +/-    1.70  0.020 / 0.040
G29     309.5          30.7                7.8 +/-    1.04      13.4 +/-    1.04  0.020 / 0.040