PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-09:28:10
G08     308.6          18.2                4.5 +/-    3.16      10.4 +/-    3.16  0.100 / 0.170
G10     341.7          61.3                4.2 +/-    0.41       4.7 +/-    0.41  0.090 / 0.210
G14     221.3          32.2                5.6 +/-    1.79       9.4 +/-    1.79  0.090 / 0.040
G20     79.6           26.3                3.5 +/-    1.98       6.6 +/-    1.98  0.060 / 0.040
G21     138.9          51.8                6.2 +/-    0.39       7.7 +/-    0.39  0.090 / 0.110
G24     68.2           29.4                4.5 +/-    1.75       7.9 +/-    1.75  0.090 / 0.140
G27     267.4          36.3                7.7 +/-    1.27      11.9 +/-    1.27  0.040 / 0.060
G32     228.8          58.9                6.6 +/-    1.85       7.5 +/-    1.85  0.040 / 0.050