PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/07-13:57:20
G02     48.9           41.9                4.0 +/-    0.63       5.7 +/-    0.63  0.050 / 0.060
G05     92.6           70.8                3.3 +/-    0.48       3.5 +/-    0.48  0.040 / 0.060
G12     186.5          45.1                4.2 +/-    2.07       5.7 +/-    2.07  0.120 / 0.400
G21     262.7          11.2               -0.1 +/-   12.04      -0.1 +/-   12.04  0.130 / 0.470
G25     249.3          58.5                2.8 +/-    0.85       3.2 +/-    0.85  0.030 / 0.060
G29     321.0          44.1                3.0 +/-    0.80       4.1 +/-    0.80  0.040 / 0.060