PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/07-09:13:10
G05     51.4           10.7                3.2 +/-    3.75       8.8 +/-    3.75  0.420 / 0.350
G10     240.2          16.5                4.7 +/-    1.63      11.2 +/-    1.63  0.120 / 0.220
G13     68.8           36.0                4.9 +/-    0.66       7.6 +/-    0.66  0.090 / 0.230
G15     111.2          55.4                6.0 +/-    0.39       7.1 +/-    0.39  0.100 / 0.260
G16     309.5          13.7                2.0 +/-    2.34       5.2 +/-    2.34  0.040 / 0.050
G20     23.3           66.9                3.5 +/-    0.52       3.8 +/-    0.52  0.040 / 0.050
G21     320.3          52.2                3.1 +/-    0.47       3.8 +/-    0.47  0.060 / 0.030
G26     280.9          19.7                4.4 +/-    1.83       9.8 +/-    1.83  0.040 / 0.030
G29     159.1          64.3                7.3 +/-    0.35       8.0 +/-    0.35  0.080 / 0.080