PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/09-16:57:20
G02     47.0           43.3                9.8 +/-    0.96      13.6 +/-    0.96  0.060 / 0.060
G05     92.7           70.2               11.7 +/-    0.76      12.4 +/-    0.76  0.060 / 0.100
G12     186.5          47.2               13.8 +/-    0.57      18.1 +/-    0.57  0.040 / 0.060
G25     262.9          57.9               11.5 +/-    1.04      13.3 +/-    1.04  0.040 / 0.060
G29     319.5          42.1               10.3 +/-    0.86      14.5 +/-    0.86  0.050 / 0.060