PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/28-22:12:50
G05     49.7           17.8                9.0 +/-    1.44      20.8 +/-    1.44  0.140 / 0.400
G10     239.4          15.0               19.3 +/-    2.11      48.0 +/-    2.11  0.130 / 0.360
G13     71.4           37.0               11.2 +/-    0.65      17.2 +/-    0.65  0.050 / 0.070
G15     118.2          54.8               12.9 +/-    0.94      15.4 +/-    0.94  0.070 / 0.080
G16     312.2          12.4               10.1 +/-    1.72      26.7 +/-    1.72  0.120 / 0.220
G18     250.1          45.4               14.8 +/-    1.17      19.9 +/-    1.17  0.110 / 0.240
G20     32.8           61.1               12.9 +/-    0.77      14.5 +/-    0.77  0.060 / 0.140
G21     317.9          50.7               13.4 +/-    1.07      16.8 +/-    1.07  0.060 / 0.150
G26     285.3          19.2               13.5 +/-    2.20      30.4 +/-    2.20  0.030 / 0.040
G29     157.4          63.4               13.0 +/-    0.92      14.3 +/-    0.92  0.020 / 0.040