PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-07:58:00
G07     329.8          57.3                4.6 +/-    0.55       5.3 +/-    0.55  0.040 / 0.060
G08     112.7          50.2                7.1 +/-    0.55       9.0 +/-    0.55  0.040 / 0.050
G09     199.3          78.4                3.3 +/-    0.55       3.4 +/-    0.55  0.040 / 0.080
G11     149.4          10.9                3.1 +/-   16.27       8.5 +/-   16.27  0.050 / 0.070
G23     153.0          44.4                5.9 +/-    1.30       8.1 +/-    1.30  0.130 / 0.340
G27     60.5           34.0                4.7 +/-    0.82       7.7 +/-    0.82  0.100 / 0.320
G28     232.1          19.3                7.1 +/-    2.81      15.9 +/-    2.81  0.180 / 0.450
G30     297.8          31.5                3.7 +/-    1.25       6.2 +/-    1.25  0.230 / 0.480