PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/01-04:58:00
G10     249.7          27.2                5.5 +/-    2.24      10.3 +/-    2.24  0.030 / 0.040
G13     54.0           29.6                4.6 +/-    1.53       8.2 +/-    1.53  0.040 / 0.040
G15     86.1           57.0                5.1 +/-    0.73       5.9 +/-    0.73  0.080 / 0.150
G16     300.1          14.4                3.3 +/-    1.47       8.4 +/-    1.47  0.110 / 0.110
G20     268.9          50.4                4.6 +/-    2.14       5.7 +/-    2.14  0.080 / 0.150
G21     335.1          60.4                3.3 +/-    0.75       3.7 +/-    0.75  0.100 / 0.140
G26     271.5          15.6                6.5 +/-    1.98      16.0 +/-    1.98  0.030 / 0.050
G29     161.3          47.3                5.1 +/-    0.56       6.6 +/-    0.56  0.040 / 0.050