PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/25-21:27:50
G02     81.0           16.6               13.1 +/-    1.06      31.3 +/-    1.06  0.060 / 0.150
G05     44.4           40.2               14.1 +/-    0.74      20.4 +/-    0.74  0.080 / 0.140
G13     104.2          32.4               18.1 +/-    1.32      30.2 +/-    1.32  0.050 / 0.150
G15     148.2          34.9               20.4 +/-    1.17      32.4 +/-    1.17  0.070 / 0.130
G18     229.5          24.4               18.9 +/-    1.82      37.5 +/-    1.82  0.110 / 0.450
G20     331.6          85.5               15.1 +/-    0.45      15.1 +/-    0.45  0.120 / 0.390
G21     294.3          34.5               15.8 +/-    1.32      25.2 +/-    1.32  0.020 / 0.030
G25     206.9          26.0               17.3 +/-    1.07      33.1 +/-    1.07  0.030 / 0.030
G26     310.2          16.0               12.4 +/-    2.20      30.2 +/-    2.20  0.050 / 0.050
G29     24.8           85.2               15.6 +/-    0.51      15.7 +/-    0.51  0.050 / 0.070