PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/29-14:27:10
G02     46.1           44.4                5.1 +/-    0.96       6.9 +/-    0.96  0.040 / 0.040
G05     104.8          71.1                8.3 +/-    0.60       8.7 +/-    0.60  0.040 / 0.040
G12     186.9          48.2                8.7 +/-    1.73      11.2 +/-    1.73  0.050 / 0.060
G25     256.7          59.5                7.5 +/-    0.44       8.5 +/-    0.44  0.080 / 0.050
G29     318.8          41.2                7.0 +/-    1.47      10.0 +/-    1.47  0.030 / 0.030