PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/10-17:12:40
G02     54.2           37.5                9.1 +/-    0.54      13.8 +/-    0.54  0.040 / 0.060
G05     68.5           66.5                9.4 +/-    0.47      10.1 +/-    0.47  0.040 / 0.070
G12     184.6          37.8               10.3 +/-    0.72      15.5 +/-    0.72  0.060 / 0.080
G13     130.4          11.7                5.0 +/-   21.98      13.3 +/-   21.98  0.070 / 0.110
G21     267.5          13.4                9.5 +/-   15.65      24.6 +/-   15.65  0.160 / 0.360
G25     246.1          55.1                9.2 +/-    0.63      11.0 +/-    0.63  0.190 / 0.430
G29     325.2          49.5                9.1 +/-    1.20      11.5 +/-    1.20  0.100 / 0.440