PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/28-22:58:00
G10     255.3          29.5               15.1 +/-    2.74      26.8 +/-    2.74  0.090 / 0.290
G13     50.1           28.3                9.1 +/-    0.48      16.6 +/-    0.48  0.090 / 0.260
G15     77.7           56.5               11.8 +/-    0.64      13.8 +/-    0.64  0.040 / 0.050
G16     293.0          13.9               12.2 +/-    1.64      31.3 +/-    1.64  0.040 / 0.060
G18     277.2          58.7               13.8 +/-    1.14      15.9 +/-    1.14  0.130 / 0.250
G20     46.9           43.2               11.5 +/-    0.58      15.9 +/-    0.58  0.180 / 0.270
G21     341.7          64.5               12.6 +/-    0.75      13.8 +/-    0.75  0.190 / 0.330
G26     265.6          13.2               15.3 +/-    1.76      39.7 +/-    1.76  0.190 / 0.340
G27     321.8          10.9               -7.4 +/-   33.31     -20.2 +/-   33.31  0.060 / 0.070
G29     164.8          40.7               15.0 +/-    1.21      21.6 +/-    1.21  0.040 / 0.070