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                6.9 +/-    1.88      14.1 +/-    1.88  0.130 / 0.330
G13     59.7           32.5                4.6 +/-    0.46       7.6 +/-    0.46  0.090 / 0.270
G15     98.3           57.4                5.7 +/-    0.73       6.6 +/-    0.73  0.040 / 0.040
G16     307.7          12.8                3.6 +/-    2.33       9.5 +/-    2.33  0.060 / 0.050
G20     261.9          46.7                7.6 +/-    0.64      10.0 +/-    0.64  0.110 / 0.190
G21     331.0          58.1                3.6 +/-    0.66       4.2 +/-    0.66  0.100 / 0.220
G26     278.9          17.0                5.9 +/-    1.73      13.9 +/-    1.73  0.030 / 0.040
G29     158.4          51.8                6.1 +/-    0.86       7.5 +/-    0.86  0.030 / 0.050