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               18.1 +/-    0.71      21.7 +/-    0.71  0.030 / 0.040
G05     147.0          62.4               23.1 +/-    0.60      25.7 +/-    0.60  0.030 / 0.040
G06     55.5           14.1               13.0 +/-    1.12      33.1 +/-    1.12  0.040 / 0.060
G12     196.3          64.3               20.4 +/-    1.24      22.3 +/-    1.24  0.040 / 0.050
G20     198.4          30.0               26.7 +/-    4.10      46.7 +/-    4.10  0.040 / 0.050
G25     287.4          58.1               20.5 +/-    1.02      23.7 +/-    1.02  0.030 / 0.050
G29     311.0          33.0               18.0 +/-    1.21      29.8 +/-    1.21  0.100 / 0.220