PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/01-16:58:20
G02     39.5           50.3               13.7 +/-    0.71      17.2 +/-    0.71  0.050 / 0.090
G05     133.9          66.7               16.7 +/-    0.60      18.1 +/-    0.60  0.040 / 0.070
G06     57.6           12.0               10.7 +/-    1.83      28.6 +/-    1.83  0.050 / 0.040
G12     194.1          60.1               15.8 +/-    1.14      17.9 +/-    1.14  0.040 / 0.050
G20     199.5          33.7               18.7 +/-    1.81      30.4 +/-    1.81  0.090 / 0.160
G25     280.7          58.7               16.1 +/-    1.02      18.5 +/-    1.02  0.080 / 0.160
G29     314.8          37.5               13.5 +/-    0.85      20.5 +/-    0.85  0.050 / 0.050