PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-15:58:00
G01     57.5           29.3                7.7 +/-    0.84      13.7 +/-    0.84  0.030 / 0.030
G06     179.4          17.5               11.0 +/-    3.77      25.7 +/-    3.77  0.030 / 0.030
G07     142.9          16.8                7.7 +/-    2.83      18.3 +/-    2.83  0.040 / 0.050
G11     46.4           19.0                7.5 +/-    0.82      17.0 +/-    0.82  0.040 / 0.050
G13     262.0          34.1                9.6 +/-    1.31      15.6 +/-    1.31  0.040 / 0.090
G15     295.0          15.5                7.1 +/-    2.58      17.4 +/-    2.58  0.060 / 0.080
G17     280.1          79.6                9.5 +/-    0.84       9.6 +/-    0.84  0.110 / 0.160
G19     236.1          55.1                9.2 +/-    0.71      11.0 +/-    0.71  0.070 / 0.170
G28     39.7           55.8                8.5 +/-    0.56      10.1 +/-    0.56  0.080 / 0.140
G30     145.0          52.4               10.2 +/-    1.09      12.5 +/-    1.09  0.080 / 0.160