PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-09:58:00
G03     254.1          69.8                4.3 +/-    1.15       4.5 +/-    1.15  0.040 / 0.050
G09     301.0          15.8                1.2 +/-    2.25       3.0 +/-    2.25  0.040 / 0.050
G14     94.7           20.1                3.4 +/-    1.10       7.5 +/-    1.10  0.100 / 0.210
G16     130.5          55.8                6.1 +/-    0.52       7.2 +/-    0.52  0.070 / 0.200
G22     196.6          59.4                5.5 +/-    1.11       6.3 +/-    1.11  0.050 / 0.080
G23     317.0          47.0                2.4 +/-    0.96       3.2 +/-    0.96  0.040 / 0.070
G26     74.2           52.1                4.5 +/-    0.51       5.5 +/-    0.51  0.040 / 0.050
G31     50.5           21.3                1.0 +/-    0.98       2.2 +/-    0.98  0.040 / 0.040