PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/30-12:42:30
G01     39.4           14.0                3.9 +/-    2.03      10.0 +/-    2.03  0.270 / 0.210
G06     173.0          41.4                6.1 +/-    1.14       8.7 +/-    1.14  0.330 / 0.190
G13     234.9          21.4                4.8 +/-    1.49      10.2 +/-    1.49  0.040 / 0.030
G15     270.2          11.4                4.7 +/-    1.96      12.8 +/-    1.96  0.040 / 0.030
G17     357.1          71.1                4.1 +/-    0.51       4.3 +/-    0.51  0.030 / 0.020
G19     285.7          71.3                3.6 +/-    0.85       3.8 +/-    0.85  0.020 / 0.030
G24     316.1          19.5                1.7 +/-    2.10       3.9 +/-    2.10  0.080 / 0.280
G28     66.6           51.1                3.5 +/-    1.19       4.3 +/-    1.19  0.080 / 0.260
G30     155.3          26.7                5.2 +/-    1.84       9.8 +/-    1.84  0.060 / 0.060