PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/08-17:42:20
G02     38.2           51.3               10.8 +/-    0.71      13.4 +/-    0.71  0.020 / 0.030
G05     120.6          69.0               11.9 +/-    0.76      12.7 +/-    0.76  0.030 / 0.020
G12     186.2          53.1               12.5 +/-    0.44      15.2 +/-    0.44  0.040 / 0.040
G25     274.4          59.1               12.3 +/-    0.44      14.1 +/-    0.44  0.040 / 0.040
G29     314.2          35.3               10.1 +/-    1.65      16.0 +/-    1.65  0.040 / 0.040