PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/06-17:58:10
G05     109.1          70.2                9.5 +/-    0.58      10.1 +/-    0.58  0.030 / 0.030
G12     185.1          49.0               10.8 +/-    1.97      13.8 +/-    1.97  0.030 / 0.040
G25     266.9          59.2                8.8 +/-    0.84      10.0 +/-    0.84  0.060 / 0.060
G29     316.5          38.1                7.7 +/-    1.05      11.5 +/-    1.05  0.050 / 0.070