PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-09:27:50
G01     128.4          10.4              -11.7 +/-   34.68     -32.3 +/-   34.68  0.030 / 0.080
G07     51.7           68.7                4.0 +/-    0.33       4.3 +/-    0.33  0.030 / 0.080
G08     51.2           39.5                3.7 +/-    1.02       5.5 +/-    1.02  0.030 / 0.050
G09     177.0          36.8                7.3 +/-    1.57      11.3 +/-    1.57  0.040 / 0.040
G11     118.5          33.2                6.8 +/-    0.68      11.2 +/-    0.68  0.040 / 0.050
G17     199.0          15.1                4.4 +/-    3.89      11.0 +/-    3.89  0.050 / 0.060
G23     161.2          11.1                3.4 +/-    3.62       9.2 +/-    3.62  0.060 / 0.090
G28     273.9          52.1                5.2 +/-    0.99       6.5 +/-    0.99  0.060 / 0.080
G30     329.6          57.8                2.9 +/-    0.70       3.3 +/-    0.70  0.140 / 0.240