PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-14:12:40
G01     39.9           14.1               12.7 +/-    1.83      32.3 +/-    1.83  0.110 / 0.340
G06     174.9          41.6               17.4 +/-    1.19      24.6 +/-    1.19  0.170 / 0.330
G13     237.6          20.4               13.0 +/-    1.55      28.4 +/-    1.55  0.310 / 0.230
G15     270.2          11.5               11.2 +/-    3.17      30.4 +/-    3.17  0.240 / 0.280
G17     12.4           66.5               13.3 +/-    0.46      14.4 +/-    0.46  0.090 / 0.120
G19     291.7          71.6               13.8 +/-    0.68      14.5 +/-    0.68  0.070 / 0.110
G24     316.4          19.9                8.7 +/-    1.52      19.1 +/-    1.52  0.040 / 0.030
G28     75.6           45.2               15.0 +/-    0.92      20.1 +/-    0.92  0.030 / 0.030
G30     155.5          26.4               15.0 +/-    1.08      28.4 +/-    1.08  0.120 / 0.190