PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-21:42:30
G01     246.0          33.0               10.2 +/-    0.95      16.9 +/-    0.95  0.040 / 0.050
G03     315.0          47.6                7.5 +/-    0.85       9.8 +/-    0.85  0.040 / 0.050
G14     65.1           37.7                8.1 +/-    0.96      12.3 +/-    0.96  0.110 / 0.260
G16     161.1          21.9               13.1 +/-    1.88      27.5 +/-    1.88  0.130 / 0.250
G22     297.7          69.3                9.2 +/-    0.74       9.7 +/-    0.74  0.050 / 0.120
G23     289.2          20.4                9.6 +/-    1.48      21.0 +/-    1.48  0.050 / 0.100
G26     134.5          41.1               14.0 +/-    0.68      20.0 +/-    0.68  0.050 / 0.050
G31     39.9           57.4                8.6 +/-    0.55      10.0 +/-    0.55  0.050 / 0.050
G32     80.6           20.7                8.9 +/-    1.09      19.4 +/-    1.09  0.070 / 0.120