PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-08:43:00
G10     267.4          39.2                6.5 +/-    0.99       9.5 +/-    0.99  0.040 / 0.040
G13     41.6           17.6                3.6 +/-    2.76       8.5 +/-    2.76  0.040 / 0.040
G15     58.2           47.7                4.3 +/-    0.98       5.6 +/-    0.98  0.210 / 0.370
G16     284.9          11.4                5.2 +/-    2.07      14.2 +/-    2.07  0.230 / 0.450
G20     298.5          60.5                5.8 +/-    0.60       6.5 +/-    0.60  0.090 / 0.260
G21     14.7           73.0                6.2 +/-    0.66       6.4 +/-    0.66  0.200 / 0.260
G24     118.7          14.5                6.4 +/-    1.98      16.0 +/-    1.98  0.040 / 0.040
G27     319.5          17.2                3.6 +/-    5.21       8.5 +/-    5.21  0.030 / 0.030
G29     164.9          26.0                5.4 +/-    1.59      10.3 +/-    1.59  0.070 / 0.070