PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-15:42:30
G02     41.0           48.2                6.8 +/-    0.59       8.7 +/-    0.59  0.030 / 0.030
G05     120.7          69.0                8.9 +/-    0.60       9.5 +/-    0.60  0.030 / 0.020
G12     188.5          55.6                8.6 +/-    0.39      10.2 +/-    0.39  0.040 / 0.040
G25     279.4          57.5               13.3 +/-    1.82      15.4 +/-    1.82  0.050 / 0.060
G29     314.1          35.4                7.2 +/-    1.06      11.3 +/-    1.06  0.040 / 0.040