PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-06:57:40
G07     319.8          53.4                4.6 +/-    0.75       5.5 +/-    0.75  0.050 / 0.060
G08     121.4          46.2                9.0 +/-    0.85      11.9 +/-    0.85  0.040 / 0.060
G09     235.4          83.4                4.8 +/-    0.65       4.8 +/-    0.65  0.030 / 0.050
G16     43.8           15.1                1.4 +/-    3.56       3.5 +/-    3.56  0.040 / 0.050
G23     149.8          52.2                9.0 +/-    0.60      11.1 +/-    0.60  0.160 / 0.340
G27     68.4           36.2                6.2 +/-    1.71       9.7 +/-    1.71  0.170 / 0.300
G28     228.0          13.5                4.2 +/-    4.35      11.0 +/-    4.35  0.030 / 0.020
G30     292.2          26.7                5.4 +/-    2.17      10.2 +/-    2.17  0.030 / 0.020