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               10.5 +/-    1.90      17.3 +/-    1.90  0.140 / 0.420
G13     46.0           24.3                7.5 +/-    2.41      15.0 +/-    2.41  0.150 / 0.300
G15     70.0           55.0                8.9 +/-    0.81      10.6 +/-    0.81  0.040 / 0.030
G16     286.6          13.2                8.5 +/-    1.39      22.0 +/-    1.39  0.040 / 0.030
G18     285.7          60.8                8.9 +/-    1.19      10.0 +/-    1.19  0.180 / 0.250
G20     51.0           38.2                8.1 +/-    1.31      12.1 +/-    1.31  0.160 / 0.280
G21     349.1          67.8                8.4 +/-    0.64       9.0 +/-    0.64  0.120 / 0.140
G26     259.6          10.8               12.7 +/-    3.35      34.8 +/-    3.35  0.080 / 0.080
G27     320.3          15.4                7.1 +/-    3.37      17.4 +/-    3.37  0.070 / 0.060
G29     166.5          35.8               10.8 +/-    1.02      17.0 +/-    1.02  0.060 / 0.070