PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-21:42:00
G02     46.6           44.0               10.1 +/-    1.68      13.7 +/-    1.68  0.030 / 0.050
G05     93.0           69.3               10.9 +/-    0.52      11.6 +/-    0.52  0.020 / 0.040
G12     185.2          46.6               13.5 +/-    2.07      17.8 +/-    2.07  0.050 / 0.060
G25     264.2          58.4               12.4 +/-    0.84      14.3 +/-    0.84  0.050 / 0.060
G29     317.9          40.0               11.5 +/-    1.79      16.7 +/-    1.79  0.060 / 0.090