PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/16-21:57:50
G05     49.5           15.6                7.1 +/-    1.52      17.5 +/-    1.52  0.140 / 0.230
G10     237.4          14.0               13.0 +/-    1.69      33.2 +/-    1.69  0.170 / 0.230
G13     72.9           36.0                9.9 +/-    0.70      15.4 +/-    0.70  0.040 / 0.060
G15     127.0          53.2               10.7 +/-    0.45      13.0 +/-    0.45  0.040 / 0.050
G16     310.9          14.1                7.5 +/-    1.79      19.0 +/-    1.79  0.020 / 0.030
G20     242.3          8.6                 5.8 +/-    1.09      16.7 +/-    1.09  0.030 / 0.030
G21     314.1          47.4                9.9 +/-    0.74      12.9 +/-    0.74  0.050 / 0.110
G26     283.7          20.7               11.3 +/-    2.22      24.4 +/-    2.22  0.070 / 0.090
G29     157.8          71.5               10.1 +/-    0.52      10.6 +/-    0.52  0.030 / 0.050