PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-05:57:40
G10     258.4          32.5               12.9 +/-    0.96      21.5 +/-    0.96  0.130 / 0.290
G13     46.8           24.7                8.8 +/-    1.55      17.4 +/-    1.55  0.140 / 0.290
G15     69.9           54.0               10.2 +/-    0.23      12.2 +/-    0.23  0.040 / 0.050
G16     286.5          14.4                8.0 +/-    1.38      20.3 +/-    1.38  0.050 / 0.050
G20     343.6          70.0                9.0 +/-    0.65       9.5 +/-    0.65  0.160 / 0.180
G21     345.6          66.2                6.6 +/-    0.98       7.1 +/-    0.98  0.120 / 0.210
G26     258.6          11.8                9.8 +/-    1.70      26.3 +/-    1.70  0.030 / 0.050
G27     321.5          12.5                6.8 +/-    3.52      18.0 +/-    3.52  0.040 / 0.050
G29     167.0          40.6               10.6 +/-    1.85      15.2 +/-    1.85  0.060 / 0.180