PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/11-14:42:50
G02     52.1           38.7                6.3 +/-    1.65       9.4 +/-    1.65  0.020 / 0.020
G05     83.7           69.3                8.1 +/-    0.44       8.6 +/-    0.44  0.030 / 0.020
G12     188.7          44.8               10.8 +/-    0.76      14.6 +/-    0.76  0.120 / 0.420
G20     203.9          47.3                9.8 +/-    0.53      12.7 +/-    0.53  0.110 / 0.430
G21     264.2          14.0                6.1 +/-    3.21      15.6 +/-    3.21  0.040 / 0.060
G25     253.0          57.4                8.3 +/-    1.43       9.6 +/-    1.43  0.040 / 0.070
G29     325.8          50.5                6.4 +/-    1.19       8.0 +/-    1.19  0.040 / 0.050