PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-06:57:30
G07     319.8          53.4                3.6 +/-    1.39       4.3 +/-    1.39  0.130 / 0.620
G08     121.4          46.2               10.5 +/-    1.58      14.0 +/-    1.58  0.170 / 0.670
G09     235.4          83.4                6.1 +/-    0.72       6.1 +/-    0.72  0.050 / 0.080
G16     43.8           15.1                3.2 +/-    1.73       7.9 +/-    1.73  0.050 / 0.080
G23     149.8          52.2                8.2 +/-    0.93      10.0 +/-    0.93  0.030 / 0.050
G27     68.4           36.2                5.4 +/-    0.55       8.5 +/-    0.55  0.040 / 0.070
G28     228.0          13.5                3.8 +/-    2.06       9.8 +/-    2.06  0.040 / 0.060
G30     292.2          26.7                4.7 +/-    3.11       8.9 +/-    3.11  0.040 / 0.080