PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/03-18:43:10
G02     34.5           54.6               17.3 +/-    1.03      20.7 +/-    1.03  0.030 / 0.050
G05     147.0          62.4               22.1 +/-    0.45      24.6 +/-    0.45  0.030 / 0.040
G06     55.5           14.1               13.1 +/-    4.69      33.3 +/-    4.69  0.020 / 0.030
G12     196.3          64.3               20.1 +/-    0.92      22.0 +/-    0.92  0.020 / 0.030
G20     198.4          30.0               25.0 +/-    1.47      43.8 +/-    1.47  0.030 / 0.040
G25     287.4          58.1               18.7 +/-    1.66      21.6 +/-    1.66  0.030 / 0.040
G29     311.0          33.0               17.0 +/-    1.08      28.0 +/-    1.08  0.180 / 0.170