PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-07:57:30
G10     245.1          23.0                7.6 +/-    1.90      15.6 +/-    1.90  0.040 / 0.040
G13     59.7           32.5                4.6 +/-    1.56       7.7 +/-    1.56  0.050 / 0.040
G15     98.3           57.4                6.2 +/-    0.77       7.2 +/-    0.77  0.190 / 0.330
G16     307.7          12.8                3.8 +/-    1.81      10.0 +/-    1.81  0.130 / 0.340
G20     261.9          46.7                7.9 +/-    4.25      10.5 +/-    4.25  0.060 / 0.110
G21     331.0          58.1                4.0 +/-    0.49       4.7 +/-    0.49  0.070 / 0.100
G26     278.9          17.0                7.3 +/-    0.98      17.3 +/-    0.98  0.060 / 0.120
G29     158.4          51.8                8.3 +/-    0.56      10.2 +/-    0.56  0.060 / 0.110