PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/19-23:57:50
G10     261.3          36.0               12.5 +/-    1.28      19.5 +/-    1.28  0.050 / 0.040
G13     44.5           21.5                7.6 +/-    2.18      16.0 +/-    2.18  0.050 / 0.050
G15     65.7           52.4                9.6 +/-    0.78      11.8 +/-    0.78  0.110 / 0.270
G16     285.2          14.0                8.0 +/-    1.97      20.3 +/-    1.97  0.200 / 0.220
G20     287.0          57.1               10.6 +/-    1.61      12.4 +/-    1.61  0.120 / 0.280
G21     350.0          67.5                9.8 +/-    0.61      10.5 +/-    0.61  0.120 / 0.260
G24     125.9          10.8                8.2 +/-   19.71      22.6 +/-   19.71  0.040 / 0.040
G27     321.2          13.6                5.9 +/-    2.45      15.3 +/-    2.45  0.030 / 0.040
G29     165.9          36.8               11.5 +/-    1.10      17.7 +/-    1.10  0.100 / 0.080