PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/11-17:57:50
G08     278.9          22.8                8.6 +/-    0.96      17.7 +/-    0.96  0.060 / 0.140
G10     34.6           62.0               10.0 +/-    0.44      11.2 +/-    0.44  0.060 / 0.160
G14     242.7          57.2               12.5 +/-    0.97      14.5 +/-    0.97  0.030 / 0.040
G18     316.5          22.8                7.7 +/-    2.60      15.8 +/-    2.60  0.030 / 0.040
G20     80.7           45.3               10.3 +/-    0.78      13.8 +/-    0.78  0.060 / 0.070
G21     150.8          25.8               11.8 +/-    0.88      22.6 +/-    0.88  0.060 / 0.070
G24     44.2           15.7                9.3 +/-    1.10      22.6 +/-    1.10  0.120 / 0.260
G27     245.4          25.3               10.7 +/-    0.71      20.8 +/-    0.71  0.120 / 0.280
G31     183.3          14.2               11.9 +/-    2.10      30.3 +/-    2.10  0.140 / 0.130
G32     278.1          74.6               12.5 +/-    0.69      13.0 +/-    0.69  0.100 / 0.120