PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-02:12:30
G10     285.0          48.0                9.8 +/-    0.81      12.7 +/-    0.81  0.040 / 0.040
G15     48.5           35.8                6.9 +/-    0.81      10.7 +/-    0.81  0.040 / 0.040
G20     328.7          64.6                8.3 +/-    1.02       9.1 +/-    1.02  0.070 / 0.120
G21     54.6           77.2                9.5 +/-    0.62       9.7 +/-    0.62  0.080 / 0.130
G24     108.0          22.2               10.3 +/-    0.92      21.4 +/-    0.92  0.050 / 0.060
G27     310.5          28.5                7.7 +/-    1.83      13.9 +/-    1.83  0.080 / 0.060
G29     167.4          15.5               10.8 +/-    2.35      26.5 +/-    2.35  0.040 / 0.090
G32     207.4          20.7               11.7 +/-    2.15      25.4 +/-    2.15  0.040 / 0.070