PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/09-09:42:40
G10     281.9          46.5                5.0 +/-    1.24       6.6 +/-    1.24  0.050 / 0.060
G15     49.4           37.7                3.6 +/-    0.75       5.5 +/-    0.75  0.040 / 0.050
G20     324.9          64.5                4.2 +/-    0.49       4.6 +/-    0.49  0.080 / 0.130
G21     62.4           75.6               -6.7 +/-    0.41      -6.9 +/-    0.41  0.080 / 0.140
G24     107.5          21.2                6.8 +/-    0.74      14.5 +/-    0.74  0.110 / 0.280
G27     312.7          26.1                2.9 +/-    2.18       5.4 +/-    2.18  0.140 / 0.260
G29     165.9          14.2                5.0 +/-    2.25      12.6 +/-    2.25  0.040 / 0.040
G32     207.4          17.0                3.8 +/-    1.27       8.9 +/-    1.27  0.040 / 0.040