PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/11-18:12:50
G02     80.8           15.5               18.9 +/-    1.41      46.5 +/-    1.41  0.110 / 0.300
G05     44.5           39.3               19.1 +/-    0.30      28.1 +/-    0.30  0.110 / 0.370
G13     105.4          31.8               24.0 +/-    0.54      40.5 +/-    0.54  0.050 / 0.130
G15     147.4          34.5               25.9 +/-    1.00      41.5 +/-    1.00  0.050 / 0.120
G18     228.9          24.5               24.4 +/-    2.03      48.3 +/-    2.03  0.040 / 0.060
G20     295.4          85.6               20.8 +/-    0.58      20.9 +/-    0.58  0.030 / 0.060
G21     294.3          35.2               19.1 +/-    0.79      30.2 +/-    0.79  0.040 / 0.040
G25     209.4          28.1               25.0 +/-    1.93      45.5 +/-    1.93  0.050 / 0.050
G26     312.8          14.2               12.4 +/-    2.29      31.5 +/-    2.29  0.090 / 0.210
G29     40.6           84.9               20.6 +/-    0.73      20.7 +/-    0.73  0.090 / 0.190