PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-19:28:00
G10     261.5          36.3               13.2 +/-    1.81      20.4 +/-    1.81  0.090 / 0.200
G13     44.4           21.3                9.6 +/-    3.10      20.5 +/-    3.10  0.090 / 0.210
G15     66.0           52.7               12.0 +/-    0.70      14.7 +/-    0.70  0.050 / 0.050
G16     283.9          14.3                9.7 +/-    2.60      24.7 +/-    2.60  0.060 / 0.050
G20     289.4          58.4               13.6 +/-    0.92      15.6 +/-    0.92  0.070 / 0.250
G21     350.0          67.5               12.1 +/-    0.53      13.0 +/-    0.53  0.080 / 0.280
G24     126.7          10.7                0.6 +/-   44.68       1.6 +/-   44.68  0.120 / 0.370
G26     257.8          10.5               12.0 +/-    2.33      33.0 +/-    2.33  0.140 / 0.340
G27     321.0          14.1                9.6 +/-    3.66      24.3 +/-    3.66  0.030 / 0.050
G29     166.5          38.1               13.5 +/-    1.22      20.2 +/-    1.22  0.030 / 0.050