PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-09:27:50
G03     240.7          67.0                6.7 +/-    2.39       7.2 +/-    2.39  0.050 / 0.090
G07     249.6          11.1                0.1 +/-   14.85       0.4 +/-   14.85  0.040 / 0.080
G09     305.2          21.5                3.7 +/-    3.81       8.0 +/-    3.81  0.060 / 0.060
G14     102.0          11.6                1.8 +/-    2.76       5.0 +/-    2.76  0.050 / 0.050
G16     125.0          60.6                8.3 +/-    2.59       9.4 +/-    2.59  0.170 / 0.330
G22     191.9          53.1                6.6 +/-    1.13       8.0 +/-    1.13  0.080 / 0.420
G23     319.7          49.3                3.0 +/-    1.52       3.8 +/-    1.52  0.040 / 0.050
G26     67.8           51.8              -25.7 +/-   67.85     -31.8 +/-   67.85  0.040 / 0.050
G31     53.0           18.3                5.3 +/-   13.68      12.1 +/-   13.68  0.120 / 0.480