PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-05:12:40
G10     269.0          40.3                6.1 +/-    1.16       8.9 +/-    1.16  0.100 / 0.140
G13     40.9           16.4                3.5 +/-    2.11       8.5 +/-    2.11  0.110 / 0.180
G15     56.7           46.4                3.8 +/-    0.46       5.0 +/-    0.46  0.060 / 0.070
G16     280.9          11.5                5.3 +/-    3.08      14.3 +/-    3.08  0.060 / 0.060
G20     301.0          61.0                3.4 +/-    0.72       3.8 +/-    0.72  0.040 / 0.040
G21     10.9           73.0                3.0 +/-    0.61       3.2 +/-    0.61  0.040 / 0.050
G24     118.7          15.2                5.6 +/-    1.77      13.9 +/-    1.77  0.130 / 0.490
G27     318.7          18.8                3.2 +/-    1.15       7.2 +/-    1.15  0.140 / 0.490
G29     165.8          26.6                4.8 +/-    1.70       9.1 +/-    1.70  0.100 / 0.240