PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/11-18:42:50
G02     66.3           29.1               10.0 +/-    0.48      17.8 +/-    0.48  0.050 / 0.110
G05     48.6           53.6                9.8 +/-    0.66      11.9 +/-    0.66  0.060 / 0.110
G12     180.3          18.9               21.1 +/-    1.73      47.6 +/-    1.73  0.030 / 0.030
G13     118.6          22.5               16.8 +/-    1.20      34.8 +/-    1.20  0.030 / 0.050
G21     280.4          23.8               13.1 +/-    1.14      26.4 +/-    1.14  0.090 / 0.270
G25     220.8          42.5               14.6 +/-    0.95      20.5 +/-    0.95  0.100 / 0.290
G29     335.1          64.7               11.2 +/-    0.47      12.3 +/-    0.47  0.050 / 0.080