PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-08:13:10
G03     241.3          67.1                7.9 +/-    1.97       8.5 +/-    1.97  0.050 / 0.060
G07     249.4          10.6               -6.0 +/-   18.05     -16.6 +/-   18.05  0.060 / 0.060
G09     305.4          22.1               -6.3 +/-   10.27     -13.2 +/-   10.27  0.080 / 0.220
G14     101.8          11.7                1.4 +/-    1.87       3.7 +/-    1.87  0.130 / 0.410
G16     126.8          60.4               19.5 +/-    8.50      22.0 +/-    8.50  0.050 / 0.070
G22     193.0          53.8                5.9 +/-    2.06       7.1 +/-    2.06  0.050 / 0.070
G23     319.4          49.0               16.0 +/-   12.32      20.5 +/-   12.32  0.140 / 0.730
G26     68.8           52.3              -81.5 +/-   68.96    -100.0 +/-   68.96  0.170 / 0.570
G31     52.7           19.0               12.5 +/-   13.05      28.1 +/-   13.05  0.040 / 0.060