PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-21:27:50
G01     320.0          14.7                8.9 +/-    1.85      22.3 +/-    1.85  0.200 / 0.280
G08     260.2          15.0               11.4 +/-    1.94      28.5 +/-    1.94  0.230 / 0.260
G10     72.8           55.9                9.7 +/-    0.50      11.4 +/-    0.50  0.140 / 0.290
G11     306.3          21.5               10.5 +/-    1.60      22.3 +/-    1.60  0.130 / 0.330
G14     287.3          70.0               10.6 +/-    0.66      11.2 +/-    0.66  0.060 / 0.070
G18     98.9           30.7               10.5 +/-    1.62      18.1 +/-    1.62  0.060 / 0.080
G27     225.5          10.8               13.8 +/-    1.99      37.9 +/-    1.99  0.030 / 0.030
G31     179.6          35.1               15.1 +/-    1.22      24.0 +/-    1.22  0.020 / 0.020
G32     353.4          70.9                9.4 +/-    0.32       9.9 +/-    0.32  0.040 / 0.040