PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-00:13:10
G03     253.8          69.6                5.6 +/-    1.43       6.0 +/-    1.43  0.160 / 0.330
G09     302.1          18.4                7.3 +/-    3.79      16.7 +/-    3.79  0.180 / 0.240
G14     96.4           16.7                6.7 +/-    1.58      15.9 +/-    1.58  0.040 / 0.030
G16     133.3          55.5                7.7 +/-    0.48       9.1 +/-    0.48  0.040 / 0.040
G22     200.5          60.3                7.4 +/-    1.21       8.4 +/-    1.21  0.040 / 0.040
G23     314.6          44.0                5.9 +/-    0.74       8.0 +/-    0.74  0.040 / 0.040
G26     77.7           54.0                4.9 +/-    0.58       5.9 +/-    0.58  0.040 / 0.040
G31     49.6           24.8                4.5 +/-    2.21       8.8 +/-    2.21  0.040 / 0.030