PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/25-08:12:30
G07     323.8          55.1                4.4 +/-    0.82       5.3 +/-    0.82  0.030 / 0.060
G08     119.6          47.7                8.5 +/-    1.04      11.1 +/-    1.04  0.030 / 0.060
G09     220.9          82.1                5.6 +/-    0.60       5.6 +/-    0.60  0.040 / 0.070
G16     44.4           13.3                1.8 +/-    1.09       4.6 +/-    1.09  0.050 / 0.080
G23     150.9          48.8                7.5 +/-    1.07       9.7 +/-    1.07  0.140 / 0.300
G27     65.5           35.6                4.6 +/-    0.45       7.3 +/-    0.45  0.110 / 0.330
G28     229.4          15.8                7.5 +/-    3.84      18.3 +/-    3.84  0.070 / 0.250
G30     294.5          28.9                4.2 +/-    2.22       7.5 +/-    2.22  0.080 / 0.260