PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/28-22:27:50
G05     52.5           12.5                8.6 +/-    1.09      22.6 +/-    1.09  0.120 / 0.360
G10     244.1          20.0               16.5 +/-    1.52      36.4 +/-    1.52  0.140 / 0.430
G13     63.2           35.1               10.0 +/-    0.53      15.8 +/-    0.53  0.040 / 0.070
G15     105.3          57.4               13.0 +/-    0.38      15.1 +/-    0.38  0.040 / 0.070
G16     306.0          13.8               10.2 +/-    2.62      26.2 +/-    2.62  0.110 / 0.260
G18     257.8          50.2               14.9 +/-    0.71      18.7 +/-    0.71  0.110 / 0.260
G20     37.7           54.9               11.2 +/-    0.73      13.3 +/-    0.73  0.130 / 0.160
G21     324.8          55.2               12.0 +/-    1.14      14.2 +/-    1.14  0.110 / 0.180
G26     278.5          17.9               12.5 +/-    1.45      28.9 +/-    1.45  0.030 / 0.040
G29     160.7          55.7               13.2 +/-    0.67      15.6 +/-    0.67  0.030 / 0.050