PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-03:12:50
G01     247.0          33.4                6.7 +/-    1.10      10.9 +/-    1.10  0.030 / 0.040
G03     315.2          46.0                4.3 +/-    1.56       5.7 +/-    1.56  0.030 / 0.040
G14     63.5           39.2                5.2 +/-    0.94       7.7 +/-    0.94  0.070 / 0.090
G16     159.7          22.6              -10.5 +/-    9.86     -21.7 +/-    9.86  0.080 / 0.110
G18     217.0          24.1                9.1 +/-    1.16      18.1 +/-    1.16  0.040 / 0.100
G22     299.3          68.5                5.6 +/-    0.63       6.0 +/-    0.63  0.050 / 0.110
G23     289.1          20.9                5.7 +/-    1.58      12.3 +/-    1.58  0.090 / 0.310
G26     131.5          41.3                7.6 +/-    1.37      10.7 +/-    1.37  0.080 / 0.260
G31     40.7           54.1                4.2 +/-    0.48       5.1 +/-    0.48  0.080 / 0.220
G32     80.9           19.7                4.8 +/-    0.87      10.7 +/-    0.87  0.080 / 0.230