PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/18-20:58:00
G01     245.9          33.0                9.1 +/-    1.20      15.0 +/-    1.20  0.070 / 0.120
G03     315.0          47.9                8.7 +/-    1.28      11.3 +/-    1.28  0.110 / 0.110
G14     65.2           37.6                8.6 +/-    0.91      13.0 +/-    0.91  0.090 / 0.090
G16     161.5          21.7                1.1 +/-   18.49       2.3 +/-   18.49  0.080 / 0.090
G18     214.3          22.6               11.7 +/-    4.97      24.1 +/-    4.97  0.070 / 0.270
G22     297.4          69.5               11.0 +/-    0.82      11.6 +/-    0.82  0.080 / 0.260
G23     289.2          20.4               10.2 +/-    1.41      22.2 +/-    1.41  0.050 / 0.110
G26     135.2          40.9               11.8 +/-    0.88      16.9 +/-    0.88  0.060 / 0.120
G31     39.7           58.1                9.6 +/-    0.52      11.1 +/-    0.52  0.040 / 0.040
G32     80.5           20.9                9.3 +/-    1.23      20.1 +/-    1.23  0.040 / 0.040