PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-16:27:40
G02     56.6           36.1               16.5 +/-    0.81      25.6 +/-    0.81  0.040 / 0.070
G05     65.0           66.3               17.6 +/-    0.54      19.0 +/-    0.54  0.040 / 0.070
G12     183.4          32.8               19.2 +/-    1.53      31.8 +/-    1.53  0.120 / 0.410
G13     129.0          14.1               18.9 +/-    2.76      48.1 +/-    2.76  0.110 / 0.430
G21     270.3          16.7               15.9 +/-    1.37      38.0 +/-    1.37  0.040 / 0.030
G25     234.0          52.6               17.4 +/-    0.71      21.2 +/-    0.71  0.040 / 0.040
G29     327.1          52.6               16.7 +/-    0.89      20.4 +/-    0.89  0.050 / 0.100