PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/07-19:28:00
G02     52.8           38.6                8.8 +/-    0.58      13.1 +/-    0.58  0.040 / 0.060
G05     70.7           66.5                9.5 +/-    0.31      10.3 +/-    0.31  0.050 / 0.060
G12     186.1          40.7               10.5 +/-    2.23      15.1 +/-    2.23  0.030 / 0.060
G13     131.8          10.5               -6.1 +/-   19.62     -16.8 +/-   19.62  0.060 / 0.090
G21     266.1          12.3                8.0 +/-    8.45      21.1 +/-    8.45  0.250 / 0.730
G25     249.5          55.9                9.7 +/-    0.67      11.4 +/-    0.67  0.260 / 0.630
G29     324.4          48.5                9.1 +/-    1.25      11.7 +/-    1.25  0.030 / 0.030