PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-21:57:50
G10     260.8          35.7                9.4 +/-    2.75      14.7 +/-    2.75  0.110 / 0.390
G13     44.8           21.8                6.7 +/-    0.66      14.1 +/-    0.66  0.110 / 0.380
G15     67.3           53.4                9.0 +/-    0.46      10.9 +/-    0.46  0.100 / 0.190
G16     285.1          14.3                7.7 +/-    2.18      19.5 +/-    2.18  0.090 / 0.210
G20     286.9          57.3               10.1 +/-    0.91      11.7 +/-    0.91  0.080 / 0.090
G21     348.5          67.0                8.1 +/-    0.40       8.8 +/-    0.40  0.090 / 0.110
G24     126.7          10.4               -9.6 +/-   38.60     -26.5 +/-   38.60  0.060 / 0.060
G26     258.5          10.8               12.0 +/-    2.69      33.0 +/-    2.69  0.050 / 0.040
G27     321.3          13.3                7.1 +/-    3.24      18.4 +/-    3.24  0.080 / 0.290
G29     166.1          38.1               11.2 +/-    0.90      16.9 +/-    0.90  0.070 / 0.280