PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/28-16:57:40
G10     258.5          34.4               13.8 +/-    2.19      22.1 +/-    2.19  0.410 / 0.420
G13     46.3           23.3               10.6 +/-    2.37      21.6 +/-    2.37  0.320 / 0.270
G15     68.5           53.0               11.7 +/-    0.63      14.3 +/-    0.63  0.160 / 0.710
G16     286.5          15.0                7.5 +/-    4.41      18.6 +/-    4.41  0.170 / 0.500
G20     285.5          57.6               12.4 +/-    1.34      14.4 +/-    1.34  0.040 / 0.040
G21     346.1          65.7               12.9 +/-    0.80      14.1 +/-    0.80  0.050 / 0.050
G26     260.5          11.9               10.8 +/-    6.55      28.9 +/-    6.55  0.040 / 0.050
G27     321.8          11.7               -0.8 +/-   31.49      -2.2 +/-   31.49  0.040 / 0.040
G29     166.0          41.7               14.5 +/-    0.72      20.6 +/-    0.72  0.150 / 0.090