PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-09:58:00
G03     225.5          66.3                2.7 +/-    0.78       2.9 +/-    0.78  0.110 / 0.440
G07     250.8          13.3                5.6 +/-    2.49      14.5 +/-    2.49  0.130 / 0.310
G09     304.6          19.3                3.6 +/-    0.92       8.1 +/-    0.92  0.060 / 0.060
G14     101.7          12.5                3.2 +/-    2.21       8.5 +/-    2.21  0.060 / 0.060
G16     122.3          60.3                6.1 +/-    0.33       6.9 +/-    0.33  0.040 / 0.060
G22     192.6          51.4                6.3 +/-    1.32       7.8 +/-    1.32  0.040 / 0.050
G23     324.3          54.1                4.0 +/-    0.91       4.8 +/-    0.91  0.130 / 0.430
G26     65.7           50.4                3.2 +/-    0.84       4.0 +/-    0.84  0.110 / 0.440
G31     54.2           16.3                1.8 +/-    1.52       4.4 +/-    1.52  0.050 / 0.080