PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/05-07:43:10
G10     250.0          25.9                8.6 +/-    1.85      16.6 +/-    1.85  0.100 / 0.450
G13     54.5           30.7                4.4 +/-    2.27       7.7 +/-    2.27  0.120 / 0.450
G15     86.0           57.0                5.1 +/-    0.89       6.0 +/-    0.89  0.040 / 0.040
G16     296.4          15.3                3.5 +/-    1.58       8.6 +/-    1.58  0.040 / 0.040
G20     11.8           68.2                3.3 +/-    0.32       3.5 +/-    0.32  0.040 / 0.030
G21     333.6          60.2                4.3 +/-    0.75       4.8 +/-    0.75  0.040 / 0.040
G26     267.5          15.9                7.0 +/-    1.25      17.1 +/-    1.25  0.030 / 0.040
G29     164.6          50.4                7.0 +/-    0.53       8.8 +/-    0.53  0.040 / 0.050