PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-07:57:50
G08     308.0          18.8                3.9 +/-    1.18       8.8 +/-    1.18  0.070 / 0.150
G10     341.0          61.2                4.5 +/-    0.62       5.1 +/-    0.62  0.110 / 0.160
G14     221.1          30.9                6.2 +/-    1.65      10.6 +/-    1.65  0.050 / 0.070
G20     72.5           37.6                5.8 +/-    1.14       8.8 +/-    1.14  0.050 / 0.080
G21     138.6          52.7                7.2 +/-    1.04       8.8 +/-    1.04  0.040 / 0.080
G24     68.4           29.4                5.6 +/-    1.51       9.8 +/-    1.51  0.040 / 0.060
G27     268.1          36.4                7.5 +/-    1.27      11.5 +/-    1.27  0.080 / 0.180
G32     228.2          58.7                7.1 +/-    1.74       8.1 +/-    1.74  0.080 / 0.160