PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/12-18:42:50
G02     260.3          78.6                9.9 +/-    0.53      10.1 +/-    0.53  0.420 / 0.320
G05     169.5          20.8               14.6 +/-    2.50      31.5 +/-    2.50  0.380 / 0.410
G06     39.6           53.0               10.9 +/-    0.68      13.2 +/-    0.68  0.040 / 0.030
G12     320.7          55.6                9.4 +/-    0.53      11.2 +/-    0.53  0.030 / 0.030
G17     73.6           21.2               10.0 +/-    2.98      21.2 +/-    2.98  0.110 / 0.110
G19     62.8           34.0                9.3 +/-    2.58      15.0 +/-    2.58  0.090 / 0.120
G24     240.2          31.5               10.1 +/-    1.53      17.2 +/-    1.53  0.100 / 0.140
G25     317.0          16.0                8.7 +/-    3.60      21.0 +/-    3.60  0.070 / 0.150