PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-13:27:30
G03     220.0          63.1                8.5 +/-    1.25       9.4 +/-    1.25  0.120 / 0.280
G07     252.2          10.8               -1.7 +/-   18.97      -4.6 +/-   18.97  0.130 / 0.290
G09     307.1          23.1                4.0 +/-    1.85       8.1 +/-    1.85  0.050 / 0.080
G14     103.6          14.1                7.5 +/-    2.14      19.0 +/-    2.14  0.050 / 0.070
G16     108.1          62.8                8.8 +/-    0.77       9.7 +/-    0.77  0.030 / 0.040
G22     186.8          45.3                8.0 +/-    1.74      10.7 +/-    1.74  0.030 / 0.050
G23     329.4          58.4                5.5 +/-    0.73       6.3 +/-    0.73  0.080 / 0.140
G26     58.3           46.1                5.6 +/-    0.73       7.4 +/-    0.73  0.080 / 0.140
G31     56.5           12.7                6.2 +/-    1.07      16.2 +/-    1.07  0.040 / 0.060