PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/21-03:42:40
G01     316.9          22.0                3.4 +/-    1.61       7.2 +/-    1.61  0.090 / 0.210
G08     251.5          10.6                6.3 +/-    2.99      17.3 +/-    2.99  0.080 / 0.290
G10     86.1           51.4                6.5 +/-    0.55       8.1 +/-    0.55  0.090 / 0.210
G11     296.8          26.8                5.0 +/-    2.41       9.4 +/-    2.41  0.080 / 0.180
G14     318.3          71.5                5.3 +/-    0.56       5.5 +/-    0.56  0.050 / 0.040
G18     105.3          26.7                6.0 +/-    1.49      11.2 +/-    1.49  0.050 / 0.040
G22     302.8          14.1                5.0 +/-    1.92      12.6 +/-    1.92  0.130 / 0.430
G25     92.9           10.5               -7.6 +/-   31.79     -20.9 +/-   31.79  0.130 / 0.360
G31     175.7          46.7                6.5 +/-    1.71       8.6 +/-    1.71  0.050 / 0.050
G32     12.5           65.0                4.0 +/-    0.69       4.4 +/-    0.69  0.050 / 0.040