PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/29-11:57:40
G10     244.2          20.5                4.6 +/-    1.60      10.0 +/-    1.60  0.100 / 0.290
G13     62.4           34.4                4.7 +/-    0.98       7.5 +/-    0.98  0.110 / 0.390
G15     99.7           56.8                7.1 +/-    0.78       8.3 +/-    0.78  0.070 / 0.130
G16     305.5          14.1                3.1 +/-    2.84       8.0 +/-    2.84  0.090 / 0.120
G20     32.0           60.1                5.1 +/-    0.66       5.8 +/-    0.66  0.030 / 0.050
G21     328.2          57.1                4.0 +/-    0.51       4.7 +/-    0.51  0.030 / 0.050
G26     276.2          18.2                4.7 +/-    1.64      10.9 +/-    1.64  0.050 / 0.060
G29     161.0          56.5                7.7 +/-    0.91       9.1 +/-    0.91  0.050 / 0.060