PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-04:57:50
G08     267.6          17.4               10.6 +/-    1.94      25.0 +/-    1.94  0.130 / 0.250
G10     66.6           56.2                5.4 +/-    0.61       6.4 +/-    0.61  0.150 / 0.300
G11     310.2          18.3               -0.1 +/-   12.95      -0.2 +/-   12.95  0.030 / 0.030
G14     270.8          67.4                6.1 +/-    0.77       6.5 +/-    0.77  0.030 / 0.030
G18     311.1          34.6                3.6 +/-    0.88       5.8 +/-    0.88  0.180 / 0.300
G20     97.5           35.3                5.3 +/-    1.09       8.4 +/-    1.09  0.150 / 0.290
G21     155.5          13.8                6.0 +/-    2.44      15.3 +/-    2.44  0.070 / 0.050
G27     230.9          15.0               10.2 +/-    2.07      25.3 +/-    2.07  0.070 / 0.050
G31     176.9          33.3                7.5 +/-    1.23      12.3 +/-    1.23  0.060 / 0.110
G32     338.2          73.8                5.8 +/-    0.35       6.0 +/-    0.35  0.070 / 0.110