PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/09-13:57:30
G02     32.3           56.6                4.3 +/-    1.05       5.0 +/-    1.05  0.020 / 0.030
G05     146.5          59.3                6.2 +/-    0.69       7.1 +/-    0.69  0.020 / 0.030
G06     51.7           20.7                4.0 +/-    3.77       8.6 +/-    3.77  0.320 / 0.250
G12     206.8          71.0                3.6 +/-    0.40       3.8 +/-    0.40  0.390 / 0.150
G19     99.0           9.9                 6.9 +/-    2.75      19.3 +/-    2.75  0.030 / 0.020
G20     198.7          23.0                5.9 +/-    3.46      12.1 +/-    3.46  0.030 / 0.020
G25     299.1          53.0                5.2 +/-    1.46       6.4 +/-    1.46  0.190 / 0.210
G29     308.6          31.4                3.5 +/-    1.58       5.9 +/-    1.58  0.150 / 0.270