PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/21-07:12:40
G05     50.3           12.9                1.8 +/-    2.27       4.8 +/-    2.27  0.040 / 0.060
G10     238.5          16.2                6.6 +/-    1.50      16.0 +/-    1.50  0.050 / 0.050
G13     70.4           35.2                3.7 +/-    1.24       5.8 +/-    1.24  0.070 / 0.100
G15     116.1          54.6                6.0 +/-    0.73       7.2 +/-    0.73  0.080 / 0.110
G16     315.5          10.6               -5.0 +/-    8.76     -13.8 +/-    8.76  0.150 / 0.240
G20     251.9          40.1                7.2 +/-    1.50      10.4 +/-    1.50  0.110 / 0.170
G21     320.3          51.9                4.1 +/-    1.16       5.0 +/-    1.16  0.160 / 0.280
G26     287.8          18.6                3.1 +/-    0.70       7.0 +/-    0.70  0.220 / 0.220
G29     153.0          61.8                6.7 +/-    0.53       7.5 +/-    0.53  0.050 / 0.250