PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-06:57:30
G07     338.6          60.3                3.9 +/-    1.05       4.4 +/-    1.05  0.030 / 0.030
G08     100.5          52.6                7.2 +/-    0.84       8.8 +/-    0.84  0.030 / 0.050
G09     186.0          71.4                5.9 +/-    0.37       6.2 +/-    0.37  0.090 / 0.120
G11     145.9          14.7                4.4 +/-    2.86      11.0 +/-    2.86  0.080 / 0.110
G23     155.5          38.6                6.6 +/-    0.58       9.8 +/-    0.58  0.030 / 0.030
G27     54.0           31.0                4.3 +/-    1.85       7.4 +/-    1.85  0.030 / 0.030
G28     236.4          24.0                5.4 +/-    2.09      10.7 +/-    2.09  0.030 / 0.040
G30     302.3          35.0                4.1 +/-    1.75       6.5 +/-    1.75  0.030 / 0.040