PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/06-19:28:00
G02     51.3           39.8                7.4 +/-    2.02      10.8 +/-    2.02  0.040 / 0.060
G05     75.1           67.5                8.7 +/-    0.45       9.3 +/-    0.45  0.040 / 0.050
G12     186.5          42.8               10.4 +/-    0.71      14.4 +/-    0.71  0.120 / 0.390
G21     264.6          11.2               -0.3 +/-   21.15      -0.9 +/-   21.15  0.250 / 0.380
G25     253.0          56.7                8.3 +/-    1.47       9.7 +/-    1.47  0.050 / 0.080
G29     323.2          46.9                8.6 +/-    1.12      11.3 +/-    1.12  0.080 / 0.090