PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/12-21:42:30
G02     63.8           29.4                9.0 +/-    1.67      16.0 +/-    1.67  0.090 / 0.110
G05     51.1           55.4                8.1 +/-    0.75       9.6 +/-    0.75  0.100 / 0.110
G12     184.0          27.9               11.7 +/-    1.11      21.4 +/-    1.11  0.080 / 0.130
G13     121.9          18.9               13.3 +/-    1.51      30.1 +/-    1.51  0.070 / 0.110
G15     160.1          17.5               15.9 +/-    3.11      37.2 +/-    3.11  0.140 / 0.350
G21     276.3          20.4                8.8 +/-    1.45      19.1 +/-    1.45  0.170 / 0.340
G25     229.6          47.8               10.6 +/-    3.52      13.8 +/-    3.52  0.080 / 0.230
G29     334.0          61.2               10.2 +/-    0.51      11.5 +/-    0.51  0.090 / 0.190