PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/08-00:27:10
G02     51.4           39.5                7.8 +/-    1.17      11.4 +/-    1.17  0.040 / 0.060
G05     77.2           67.2                8.4 +/-    0.59       9.0 +/-    0.59  0.040 / 0.060
G12     185.8          42.6                9.7 +/-    0.83      13.6 +/-    0.83  0.030 / 0.030
G25     255.6          57.2                6.5 +/-    1.60       7.6 +/-    1.60  0.030 / 0.030
G29     321.1          44.2                8.8 +/-    1.06      12.0 +/-    1.06  0.060 / 0.040