PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/13-17:57:50
G10     257.9          33.9                9.3 +/-    1.71      15.0 +/-    1.71  0.140 / 0.210
G13     46.7           23.8                8.2 +/-    2.22      16.5 +/-    2.22  0.470 / 0.360
G15     70.3           53.9                8.7 +/-    0.68      10.5 +/-    0.68  0.040 / 0.040
G16     287.2          15.1                5.5 +/-    3.73      13.6 +/-    3.73  0.040 / 0.060
G20     283.9          57.0                9.0 +/-    2.15      10.5 +/-    2.15  0.150 / 0.700
G21     344.5          65.1               10.0 +/-    0.75      10.9 +/-    0.75  0.160 / 0.740
G26     261.0          12.2                9.1 +/-    1.45      24.3 +/-    1.45  0.090 / 0.180
G27     321.9          11.1               -6.3 +/-   31.18     -17.2 +/-   31.18  0.060 / 0.160
G29     165.8          42.3               10.0 +/-    0.97      14.0 +/-    0.97  0.040 / 0.050