PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/30-01:12:50
G10     260.4          33.2               10.7 +/-    1.35      17.5 +/-    1.35  0.040 / 0.090
G13     46.0           24.3                7.3 +/-    1.68      14.4 +/-    1.68  0.050 / 0.110
G15     70.0           55.0                9.3 +/-    0.33      11.1 +/-    0.33  0.060 / 0.090
G16     286.6          13.2                8.9 +/-    1.71      23.0 +/-    1.71  0.070 / 0.100
G18     285.7          60.8                9.7 +/-    0.78      10.9 +/-    0.78  0.160 / 0.410
G20     51.0           38.2                7.1 +/-    0.58      10.6 +/-    0.58  0.150 / 0.380
G21     349.1          67.8                8.5 +/-    0.56       9.1 +/-    0.56  0.040 / 0.050
G26     259.6          10.8               12.6 +/-    2.48      34.4 +/-    2.48  0.040 / 0.050
G27     320.3          15.4                8.6 +/-    2.31      21.1 +/-    2.31  0.150 / 0.310
G29     166.5          35.8               11.1 +/-    0.61      17.4 +/-    0.61  0.160 / 0.240