PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/21-06:58:10
G03     221.5          61.4               11.3 +/-   28.46      12.7 +/-   28.46  0.040 / 0.080
G07     254.9          13.7                5.7 +/-    4.85      14.7 +/-    4.85  0.040 / 0.080
G09     310.0          28.7                6.1 +/-   30.22      11.0 +/-   30.22  0.110 / 0.260
G16     96.5           63.1               11.1 +/-   28.58      12.2 +/-   28.58  0.100 / 0.210
G22     191.2          45.5               10.2 +/-   28.97      13.6 +/-   28.97  0.050 / 0.050
G23     326.8          56.8                9.3 +/-   28.11      10.8 +/-   28.11  0.030 / 0.060
G26     54.7           43.3                8.4 +/-   29.47      11.7 +/-   29.47  0.030 / 0.040
G31     58.4           10.3                4.8 +/-   29.57      13.4 +/-   29.57  0.030 / 0.040