PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-20:58:00
G08     316.5          15.1               12.9 +/-    1.60      32.0 +/-    1.60  0.050 / 0.080
G10     313.7          56.5               18.9 +/-    1.28      22.1 +/-    1.28  0.050 / 0.080
G14     213.3          20.7               27.2 +/-    2.17      58.7 +/-    2.17  0.030 / 0.050
G15     45.8           23.2               15.0 +/-    0.71      30.7 +/-    0.71  0.040 / 0.050
G20     16.2           63.8               17.6 +/-    0.73      19.4 +/-    0.73  0.060 / 0.130
G21     120.8          66.1               20.9 +/-    0.79      22.6 +/-    0.79  0.060 / 0.130
G24     82.9           28.5               17.4 +/-    0.66      31.5 +/-    0.66  0.120 / 0.280
G27     290.0          36.6               18.4 +/-    0.98      28.4 +/-    0.98  0.110 / 0.210
G32     215.4          42.8               25.4 +/-    1.34      35.4 +/-    1.34  0.200 / 0.440