PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/11-16:57:30
G02     54.4           37.0               14.1 +/-    0.32      21.5 +/-    0.32  0.050 / 0.060
G05     76.4           68.9               15.2 +/-    0.22      16.2 +/-    0.22  0.050 / 0.070
G12     187.3          40.4               16.2 +/-    1.34      23.4 +/-    1.34  0.180 / 0.300
G13     134.8          10.5               -1.5 +/-   34.29      -4.0 +/-   34.29  0.210 / 0.310
G20     204.7          52.3               16.2 +/-    1.48      19.9 +/-    1.48  0.020 / 0.030
G21     266.5          15.1               13.2 +/-    1.12      32.8 +/-    1.12  0.030 / 0.030
G25     244.0          55.8               16.0 +/-    0.60      18.9 +/-    0.60  0.050 / 0.080
G29     327.8          53.1               11.6 +/-    1.06      14.1 +/-    1.06  0.050 / 0.070