PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-04:42:30
G10     262.4          36.4                3.1 +/-    1.02       4.7 +/-    1.02  0.100 / 0.350
G13     44.0           20.9                3.5 +/-    2.50       7.4 +/-    2.50  0.110 / 0.260
G15     63.4           50.9                2.4 +/-    0.92       3.0 +/-    0.92  0.040 / 0.040
G16     286.5          13.2                1.9 +/-    2.74       5.0 +/-    2.74  0.040 / 0.040
G20     289.5          58.2                0.6 +/-    1.25       0.7 +/-    1.25  0.080 / 0.080
G21     355.8          69.2                0.4 +/-    1.04       0.4 +/-    1.04  0.110 / 0.080
G24     123.8          11.6                4.8 +/-    2.58      12.9 +/-    2.58  0.130 / 0.390
G27     321.0          13.9                0.2 +/-    3.02       0.5 +/-    3.02  0.140 / 0.290
G29     165.0          33.1                3.1 +/-    1.11       5.1 +/-    1.11  0.170 / 0.370