PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/04-21:57:30
G08     319.6          12.1               13.4 +/-    2.33      35.8 +/-    2.33  0.030 / 0.050
G10     304.5          53.7               15.7 +/-    0.78      19.0 +/-    0.78  0.040 / 0.050
G14     211.7          18.1               18.3 +/-    3.19      42.1 +/-    3.19  0.110 / 0.610
G15     45.5           23.5               12.5 +/-    0.73      25.2 +/-    0.73  0.120 / 0.680
G18     10.8           64.8               15.2 +/-    0.70      16.6 +/-    0.70  0.090 / 0.140
G20     75.2           14.7               13.9 +/-    1.54      34.9 +/-    1.54  0.080 / 0.120
G21     112.8          68.4               17.5 +/-    0.83      18.7 +/-    0.83  0.080 / 0.340
G24     93.2           28.4               17.1 +/-    1.50      30.9 +/-    1.50  0.100 / 0.270
G27     292.5          36.9               17.6 +/-    1.12      26.9 +/-    1.12  0.040 / 0.050