PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-14:12:40
G02     232.2          70.1                7.9 +/-    1.01       8.3 +/-    1.01  0.140 / 0.390
G05     174.5          11.5                5.4 +/-   15.74      14.7 +/-   15.74  0.260 / 0.420
G06     41.8           61.2                8.3 +/-    0.72       9.3 +/-    0.72  0.070 / 0.110
G12     321.1          48.4                6.4 +/-    1.34       8.2 +/-    1.34  0.060 / 0.110
G17     66.0           26.5                6.4 +/-    1.40      12.2 +/-    1.40  0.070 / 0.090
G19     54.1           39.4                7.4 +/-    0.93      10.8 +/-    0.93  0.070 / 0.100
G24     250.9          36.6                8.7 +/-    0.90      13.3 +/-    0.90  0.040 / 0.050
G28     128.7          10.3                7.5 +/-    3.99      20.7 +/-    3.99  0.040 / 0.050