PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-02:27:50
G07     330.2          57.4                5.2 +/-    0.70       6.0 +/-    0.70  0.110 / 0.130
G08     101.7          50.9                7.6 +/-    0.85       9.5 +/-    0.85  0.100 / 0.130
G09     181.8          72.9                8.2 +/-    1.14       8.6 +/-    1.14  0.040 / 0.050
G11     149.7          11.9                5.7 +/-    2.19      15.3 +/-    2.19  0.040 / 0.050
G23     155.0          44.4                7.6 +/-    1.08      10.3 +/-    1.08  0.130 / 0.350
G27     57.4           32.6                4.5 +/-    0.84       7.5 +/-    0.84  0.180 / 0.390
G28     233.5          19.8                5.3 +/-    2.67      11.8 +/-    2.67  0.190 / 0.340
G30     298.4          30.8                5.6 +/-    1.25       9.6 +/-    1.25  0.170 / 0.320