PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-08:12:30
G07     328.1          56.2                4.1 +/-    1.16       4.8 +/-    1.16  0.030 / 0.050
G08     102.7          50.4                8.1 +/-    1.15      10.1 +/-    1.15  0.030 / 0.050
G09     181.9          73.9                4.4 +/-    0.45       4.5 +/-    0.45  0.060 / 0.110
G11     147.2          11.3                4.5 +/-    9.06      12.3 +/-    9.06  0.080 / 0.120
G23     154.5          46.7                7.8 +/-    0.79      10.3 +/-    0.79  0.050 / 0.060
G27     60.0           34.3                3.4 +/-    0.86       5.4 +/-    0.86  0.050 / 0.070
G28     234.0          25.6                6.9 +/-    0.62      13.4 +/-    0.62  0.030 / 0.080
G30     298.0          31.2                5.4 +/-    0.88       9.2 +/-    0.88  0.030 / 0.070