PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/28-08:12:50
G07     331.8          58.0                4.6 +/-    0.69       5.3 +/-    0.69  0.050 / 0.040
G08     111.0          50.9                7.6 +/-    0.84       9.5 +/-    0.84  0.040 / 0.040
G09     196.4          77.2                7.0 +/-    0.37       7.2 +/-    0.37  0.040 / 0.070
G11     148.6          11.6               -0.4 +/-    1.78      -1.1 +/-    1.78  0.060 / 0.080
G23     153.4          43.0                6.5 +/-    1.13       9.0 +/-    1.13  0.040 / 0.020
G27     59.1           33.5                5.0 +/-    1.24       8.2 +/-    1.24  0.040 / 0.030
G28     233.0          20.3                4.5 +/-    3.00       9.9 +/-    3.00  0.040 / 0.040
G30     298.8          32.4                4.2 +/-    2.36       7.0 +/-    2.36  0.040 / 0.050