PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/25-17:57:40
G10     253.6          29.5                8.9 +/-    0.96      15.8 +/-    0.96  0.040 / 0.050
G13     50.4           27.5                8.1 +/-    1.47      15.0 +/-    1.47  0.040 / 0.040
G15     84.7           58.7                9.5 +/-    0.58      10.9 +/-    0.58  0.120 / 0.380
G16     292.3          15.2                7.9 +/-    2.15      19.6 +/-    2.15  0.140 / 0.450
G20     274.8          53.1               10.4 +/-    1.15      12.7 +/-    1.15  0.080 / 0.150
G21     340.4          63.3                8.9 +/-    0.71       9.9 +/-    0.71  0.060 / 0.160
G26     265.4          14.1               10.0 +/-    1.96      25.4 +/-    1.96  0.030 / 0.040
G29     165.2          45.9               10.7 +/-    0.71      14.2 +/-    0.71  0.020 / 0.040