PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-02:57:30
G08     285.5          23.4                7.8 +/-    1.05      15.7 +/-    1.05  0.030 / 0.020
G10     17.9           63.3                9.0 +/-    0.67       9.9 +/-    0.67  0.030 / 0.020
G14     236.4          53.3               12.2 +/-    1.93      14.8 +/-    1.93  0.060 / 0.100
G18     69.4           49.1              -54.9 +/-   51.34     -70.0 +/-   51.34  0.050 / 0.090
G21     148.6          34.3               10.2 +/-    0.73      16.4 +/-    0.73  0.090 / 0.130
G24     52.2           24.0                5.5 +/-    1.72      11.1 +/-    1.72  0.090 / 0.100
G27     246.7          28.1                9.2 +/-    1.16      16.8 +/-    1.16  0.040 / 0.030
G31     182.8          11.0               -2.5 +/-   17.56      -6.9 +/-   17.56  0.030 / 0.020
G32     258.3          70.7                9.3 +/-    0.69       9.8 +/-    0.69  0.070 / 0.090