PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/29-15:57:50
G02     59.6           32.4                9.0 +/-    0.75      15.0 +/-    0.75  0.030 / 0.030
G05     61.6           64.0               10.1 +/-    0.57      11.1 +/-    0.57  0.030 / 0.040
G12     186.2          34.1               11.3 +/-    0.93      18.3 +/-    0.93  0.060 / 0.050
G13     130.2          14.6               13.1 +/-    3.60      33.0 +/-    3.60  0.050 / 0.060
G15     163.5          11.8               11.3 +/-    2.87      30.4 +/-    2.87  0.090 / 0.090
G20     207.9          58.4               12.3 +/-    1.59      14.1 +/-    1.59  0.060 / 0.080
G21     271.6          19.5                9.5 +/-    1.22      21.1 +/-    1.22  0.120 / 0.250
G25     235.3          52.0               10.8 +/-    0.88      13.3 +/-    0.88  0.110 / 0.260
G29     333.6          59.7               10.9 +/-    0.47      12.4 +/-    0.47  0.160 / 0.500