PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-04:27:50
G08     277.6          22.2                6.9 +/-    1.29      14.3 +/-    1.29  0.030 / 0.020
G10     34.5           62.6                5.2 +/-    0.53       5.7 +/-    0.53  0.030 / 0.030
G11     316.7          11.2               -2.4 +/-   13.41      -6.5 +/-   13.41  0.200 / 0.260
G14     246.2          59.5                7.1 +/-    0.76       8.1 +/-    0.76  0.150 / 0.090
G18     77.8           45.4              -48.1 +/-   59.49     -64.4 +/-   59.49  0.040 / 0.030
G21     151.4          27.3                6.7 +/-    1.73      12.5 +/-    1.73  0.040 / 0.020
G24     46.7           19.7                5.2 +/-    3.55      11.5 +/-    3.55  0.070 / 0.160
G27     240.0          23.5                8.9 +/-    2.36      17.9 +/-    2.36  0.090 / 0.160
G31     180.7          18.4                8.3 +/-    1.86      19.0 +/-    1.86  0.060 / 0.060
G32     285.0          75.1                5.7 +/-    0.41       5.9 +/-    0.41  0.050 / 0.040