PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/07-19:57:30
G02     42.1           47.9                7.9 +/-    0.71      10.3 +/-    0.71  0.030 / 0.030
G05     109.0          69.3               10.3 +/-    0.78      10.9 +/-    0.78  0.030 / 0.030
G12     185.2          50.7               11.4 +/-    0.77      14.3 +/-    0.77  0.050 / 0.050
G25     273.0          58.7                9.0 +/-    2.05      10.3 +/-    2.05  0.050 / 0.040
G29     315.0          36.2                9.0 +/-    1.70      14.0 +/-    1.70  0.050 / 0.040