PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/16-21:57:40
G05     49.5           15.6                7.1 +/-    0.78      17.5 +/-    0.78  0.130 / 0.210
G10     237.4          14.0               14.4 +/-    2.89      36.8 +/-    2.89  0.160 / 0.370
G13     72.9           36.0               10.7 +/-    1.06      16.6 +/-    1.06  0.040 / 0.070
G15     127.0          53.2               11.8 +/-    0.93      14.3 +/-    0.93  0.040 / 0.070
G16     310.9          14.1                8.1 +/-    2.37      20.5 +/-    2.37  0.030 / 0.040
G20     242.3          8.6                 7.3 +/-    1.46      20.9 +/-    1.46  0.020 / 0.040
G21     314.1          47.4                9.2 +/-    1.11      12.0 +/-    1.11  0.050 / 0.130
G26     283.7          20.7                9.7 +/-    1.77      20.9 +/-    1.77  0.050 / 0.090
G29     157.8          71.5               11.3 +/-    1.04      11.9 +/-    1.04  0.040 / 0.050