PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-05:57:40
G01     224.5          15.4                5.6 +/-    1.62      13.7 +/-    1.62  0.140 / 0.210
G03     285.6          66.8                4.1 +/-    1.42       4.4 +/-    1.42  0.160 / 0.220
G09     296.3          11.4                2.6 +/-   19.41       7.0 +/-   19.41  0.040 / 0.040
G14     89.4           21.3                4.0 +/-    1.51       8.6 +/-    1.51  0.040 / 0.050
G16     148.3          46.3                8.8 +/-    1.71      11.7 +/-    1.71  0.170 / 0.270
G22     212.0          69.3                5.6 +/-    0.77       5.9 +/-    0.77  0.210 / 0.330
G23     308.0          37.4                4.4 +/-    1.34       6.7 +/-    1.34  0.100 / 0.260
G26     98.3           55.5                6.8 +/-    0.61       8.1 +/-    0.61  0.090 / 0.270
G31     45.3           32.1                3.0 +/-    0.39       5.0 +/-    0.39  0.050 / 0.090