PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-05:12:30
G10     247.2          23.6                9.2 +/-    1.65      18.6 +/-    1.65  0.100 / 0.270
G13     57.7           32.3                7.6 +/-    1.54      12.7 +/-    1.54  0.110 / 0.280
G15     94.5           57.7                7.7 +/-    0.54       8.9 +/-    0.54  0.040 / 0.040
G16     299.1          15.6                4.8 +/-    2.24      11.8 +/-    2.24  0.040 / 0.050
G20     296.4          69.2                7.7 +/-    0.75       8.2 +/-    0.75  0.040 / 0.040
G21     328.5          57.2                7.6 +/-    0.60       8.8 +/-    0.60  0.040 / 0.040
G26     270.4          17.2                8.2 +/-    1.84      19.3 +/-    1.84  0.040 / 0.040
G29     163.9          55.1                7.5 +/-    0.37       9.0 +/-    0.37  0.030 / 0.050