PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-02:13:00
G08     300.9          22.3                7.5 +/-    1.04      15.5 +/-    1.04  0.040 / 0.040
G10     345.4          61.7                9.0 +/-    0.70      10.0 +/-    0.70  0.060 / 0.060
G14     223.0          39.9               12.1 +/-    1.32      17.7 +/-    1.32  0.040 / 0.050
G18     49.2           56.6               10.2 +/-    0.92      12.0 +/-    0.92  0.030 / 0.050
G21     140.4          49.1               10.9 +/-    0.40      13.9 +/-    0.40  0.050 / 0.080
G24     66.7           29.6                8.0 +/-    1.47      14.2 +/-    1.47  0.050 / 0.090
G27     263.0          35.5               12.3 +/-    1.48      19.3 +/-    1.48  0.030 / 0.030
G32     231.4          58.2               10.6 +/-    1.98      12.2 +/-    1.98  0.030 / 0.030