PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-21:12:40
G05     47.5           23.0                7.8 +/-    0.58      15.9 +/-    0.58  0.050 / 0.080
G13     80.4           37.6                9.3 +/-    0.74      14.1 +/-    0.74  0.050 / 0.090
G15     128.1          50.7               10.8 +/-    0.35      13.5 +/-    0.35  0.100 / 0.290
G18     243.6          40.4                8.4 +/-    1.46      12.2 +/-    1.46  0.110 / 0.340
G20     26.8           67.8                9.3 +/-    0.55      10.0 +/-    0.55  0.330 / 0.490
G21     311.7          46.6               10.1 +/-    0.54      13.3 +/-    0.54  0.250 / 0.450
G25     197.7          10.4               15.6 +/-   18.39      43.0 +/-   18.39  0.040 / 0.110
G26     292.7          19.4                8.7 +/-    1.00      19.5 +/-    1.00  0.040 / 0.110
G29     152.0          70.5               10.1 +/-    0.80      10.7 +/-    0.80  0.070 / 0.140