PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-21:58:00
G02     46.6           44.0               10.0 +/-    0.92      13.6 +/-    0.92  0.020 / 0.030
G05     93.3           69.3               10.8 +/-    0.55      11.5 +/-    0.55  0.020 / 0.030
G12     185.4          46.9               13.5 +/-    1.01      17.7 +/-    1.01  0.030 / 0.040
G25     264.6          58.4               12.6 +/-    1.66      14.5 +/-    1.66  0.040 / 0.040
G29     317.9          39.8                9.8 +/-    0.70      14.3 +/-    0.70  0.040 / 0.050