PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/11-19:12:30
G02     53.2           38.3                9.3 +/-    0.41      14.0 +/-    0.41  0.060 / 0.050
G05     69.5           66.3               10.2 +/-    0.27      11.1 +/-    0.27  0.050 / 0.060
G12     185.8          40.0               12.2 +/-    1.58      17.8 +/-    1.58  0.040 / 0.080
G13     131.4          10.9               -5.3 +/-   24.15     -14.5 +/-   24.15  0.040 / 0.090
G21     266.5          12.7               12.1 +/-    7.04      31.9 +/-    7.04  0.270 / 0.760
G25     248.4          55.7               11.8 +/-    0.54      13.9 +/-    0.54  0.230 / 0.360
G29     324.8          49.0               10.7 +/-    1.15      13.7 +/-    1.15  0.050 / 0.090