PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-01:13:00
G10     242.5          20.8               10.0 +/-    2.41      21.7 +/-    2.41  0.120 / 0.390
G13     63.3           33.4                7.5 +/-    1.41      12.2 +/-    1.41  0.120 / 0.270
G15     105.4          56.8                8.8 +/-    1.12      10.3 +/-    1.12  0.040 / 0.070
G16     307.0          14.2                4.0 +/-    2.86      10.2 +/-    2.86  0.040 / 0.050
G20     257.8          43.9                9.3 +/-    3.31      12.8 +/-    3.31  0.100 / 0.420
G21     322.9          53.0                7.2 +/-    0.53       8.8 +/-    0.53  0.080 / 0.390
G26     279.0          18.5                8.2 +/-    1.85      18.7 +/-    1.85  0.090 / 0.130
G29     158.5          59.8                9.5 +/-    0.41      10.8 +/-    0.41  0.110 / 0.120