PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/29-03:27:40
G02     58.0           33.5                5.3 +/-    0.69       8.7 +/-    0.69  0.060 / 0.090
G05     61.2           62.0                6.0 +/-    0.28       6.7 +/-    0.28  0.070 / 0.070
G12     185.6          35.9               11.0 +/-    2.53      17.1 +/-    2.53  0.030 / 0.080
G13     130.8          13.2                7.4 +/-    2.86      19.1 +/-    2.86  0.030 / 0.050
G15     165.0          10.1               -9.1 +/-   13.09     -25.2 +/-   13.09  0.050 / 0.060
G20     216.0          21.9               13.4 +/-    2.04      28.1 +/-    2.04  0.050 / 0.060
G21     268.9          15.4               10.5 +/-    1.63      25.9 +/-    1.63  0.070 / 0.210
G25     243.0          53.8                9.7 +/-    1.02      11.8 +/-    1.02  0.080 / 0.210
G29     326.1          51.3                7.8 +/-    1.09       9.7 +/-    1.09  0.060 / 0.100