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                9.5 +/-    0.58      10.0 +/-    0.58  0.050 / 0.040
G09     300.2          13.8                8.0 +/-    1.50      20.5 +/-    1.50  0.050 / 0.040
G14     95.7           18.0                9.2 +/-    1.94      21.3 +/-    1.94  0.120 / 0.100
G16     138.5          54.6               11.0 +/-    0.66      13.1 +/-    0.66  0.100 / 0.150
G22     198.9          60.6               10.2 +/-    0.60      11.6 +/-    0.60  0.030 / 0.060
G23     315.6          45.4                8.1 +/-    0.61      10.9 +/-    0.61  0.030 / 0.040
G26     78.1           54.0                8.0 +/-    0.54       9.7 +/-    0.54  0.110 / 0.250
G31     49.6           23.9                6.4 +/-    2.38      12.9 +/-    2.38  0.110 / 0.230