PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/16-21:12:50
G03     249.7          70.1                8.6 +/-    1.22       9.1 +/-    1.22  0.030 / 0.040
G09     300.2          13.8                7.2 +/-    2.37      18.3 +/-    2.37  0.030 / 0.040
G14     95.7           18.0               10.4 +/-    2.10      24.0 +/-    2.10  0.030 / 0.080
G16     138.5          54.6               11.2 +/-    0.92      13.4 +/-    0.92  0.030 / 0.050
G22     198.9          60.6               10.1 +/-    0.71      11.4 +/-    0.71  0.060 / 0.110
G23     315.6          45.4                7.8 +/-    1.53      10.5 +/-    1.53  0.080 / 0.130
G26     78.1           54.0                7.1 +/-    0.40       8.6 +/-    0.40  0.130 / 0.260
G31     49.6           23.9                5.9 +/-    1.51      11.9 +/-    1.51  0.090 / 0.230