PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/09-06:58:10
G05     51.4           10.5                2.3 +/-    4.12       6.2 +/-    4.12  0.090 / 0.330
G10     240.2          16.6                5.3 +/-    0.74      12.7 +/-    0.74  0.070 / 0.280
G13     68.5           35.8                4.3 +/-    1.12       6.8 +/-    1.12  0.450 / 0.280
G15     112.1          55.5                5.3 +/-    0.47       6.3 +/-    0.47  0.190 / 0.220
G16     308.7          14.1                2.9 +/-    2.48       7.4 +/-    2.48  0.040 / 0.040
G20     324.1          75.9                4.2 +/-    0.35       4.3 +/-    0.35  0.040 / 0.040
G21     319.3          51.3                3.5 +/-    0.74       4.3 +/-    0.74  0.040 / 0.050
G26     280.2          19.8                3.4 +/-    2.40       7.4 +/-    2.40  0.060 / 0.050
G29     159.7          65.2                4.8 +/-    0.47       5.2 +/-    0.47  0.030 / 0.030