PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/10-19:42:10
G02     41.0           48.9                9.1 +/-    1.33      11.7 +/-    1.33  0.040 / 0.030
G05     113.0          69.0               10.3 +/-    0.96      10.9 +/-    0.96  0.030 / 0.030
G12     185.3          52.0               10.9 +/-    1.41      13.4 +/-    1.41  0.050 / 0.040
G25     275.5          58.6                3.0 +/-    1.00       3.5 +/-    1.00  0.040 / 0.050
G29     314.2          35.2                8.8 +/-    1.25      13.9 +/-    1.25  0.040 / 0.040